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| − | <IMG SRC="https://static.igem.org/mediawiki/2015/e/e8/Birkbeck_150916_LP_gel1_pred.png" height="600px" width="300px"> | + | <p>a. <IMG SRC="https://static.igem.org/mediawiki/2015/e/e8/Birkbeck_150916_LP_gel1_pred.png" height="600px" width="300px"> |
| − | <IMG SRC="https://static.igem.org/mediawiki/2015/1/18/Birkbeck_150916_LP_gel1.jpeg" height="600px" width="350px"> | + | b. <IMG SRC="https://static.igem.org/mediawiki/2015/1/18/Birkbeck_150916_LP_gel1.jpeg" height="600px" width="350px" ></p> |
| − | <p>Comparison of predicted and actual band sizes on gel 1.</p> | + | <p><b>Fig 1.</b> Comparison of predicted (a) and actual (b) band sizes on gel 1.</p> |
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| − | <IMG SRC="https://static.igem.org/mediawiki/2015/6/60/Birkbeck_150916_LP_gel2_pred.png" height="600px" width="300px"> | + | <p>a. <IMG SRC="https://static.igem.org/mediawiki/2015/6/60/Birkbeck_150916_LP_gel2_pred.png" height="600px" width="300px"> |
| − | <IMG SRC="https://static.igem.org/mediawiki/2015/f/f9/Birkbeck_150916_LP_gel2.jpeg" height="600px" width="350px"> | + | b. <IMG SRC="https://static.igem.org/mediawiki/2015/f/f9/Birkbeck_150916_LP_gel2.jpeg" height="600px" width="350px" ></p> |
| − | <p>Comparison of predicted and actual band sizes on gel 2. | + | <p><b>Fig 2.</b> Comparison of predicted (a) and actual (b) band sizes on gel 2.</p> |
| − | </p> | + | |
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| − | <h2><b>Results</b></h2>
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| − | <a href="#">InterLab Study Results
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| − | <p>Click here to see the results of our contribution to iGEM's InterLab Study, and some additional experiments that support our research.
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| − | <p><IMG SRC="https://static.igem.org/mediawiki/2015/5/58/Growth_Curve_50_mL_600_nm_team_birkbeck_iGEM_2015.jpg"></center>
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| − | <p><b><u>Fig. 1: Growth Curve of <i>E. coli</i> DH5α Strains Following Culture Optical Density of 600 nm</u></b>.</p>
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| − | <p>Growth kinetics was initially studied using 50 mL cultures. <b>Fig. 1</b> shows the growth kinetics of <i>E. coli</i> DH5α & derivative strains containing plasmids from the <a href="https://2015.igem.org/Team:Birkbeck/InterLab_Study">InterLab</a> study. The growth curve shows that the <i>E. coli</i> strain that contains the P1-<i>gfp</i> expression device grows at a slower rate than the other strains investigated. At 220 minutes the <i>E. coli</i> DH5α P1 strain has a significantly lower OD<sub>600</sub> than the <i>E. coli</i> DH5α (P=0.023). <i>E. coli</i> DH5α remains significantly higher in OD<sub>600</sub> than <i>E. coli</i> DH5α with the P1-<i>gfp</i> expression device (P=<0.001)<!---->. The only difference between the <i>E. coli</i> DH5α & <i>E. coli</i> DH5α positive control device is observed at 280 minutes into the growth curve (P=0.016) where the positive control has a higher OD<sub>600</sub>. The multiple comparison table showing P values can be viewed in <a href="https://2015.igem.org/Team:Birkbeck/Results/Table_S1"><b>Table S1</b>.</a></p>.
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| − | <center><img src="https://static.igem.org/mediawiki/2015/a/a8/Growth_Curve_%28395_nm%29_50_mL_Cultures_Team_birkbeck_iGEM_2015.jpg "></center>
| + | <a href="https://2015.igem.org/Team:Birkbeck/ Conclusion"><img width=" 400px" height=" auto" src="https://static.igem.org/mediawiki/2015/ 7/ 7d/ Birkbeck_phage_infection2. png" border=" 0"/></a> |
| − | <p><b><u>Fig. 2: Growth Curve of <i>E. coli</i> DH5α Strains Following Culture Optical Density of 395 nm</u></b>.</p>
| + | <p>To find concluding remarks about our project</p> |
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| − | <p>In order to investigate if there could be a point in the <i>E. coli</i> DH5α growth curve in which a signal from the GFP could be detected by absorbance, the growth curves were also conducted using the major absorption peak of GFP (wavelength 395 nm)<!--(REF!)-->. The growth curve data for the culture optical density is displayed in <b>Fig. 2</b>.</P>
| + | <a href="https://2015.igem.org/Team:Birkbeck/Research"><img width="400px" height="auto" src="https://static.igem.org/mediawiki/2015/c/c7/Rachel-elliot.jpg" border="0"/></a> |
| − | <p>When comparing the data point of <i>E. coli</i> DH5α strains, there appears to be a significant increase in culture OD<sub>395</sub> in the <i>E. coli</i> cells with the P1-<i>gfp</i> expression device (P<0.001). This apparent signal is only present between 60-100 minutes of growth. When comparing the positive control & <i>E. coli</i> DH5α1, there is no significant difference between the data sets at 60 or 100 minutes (P=1 for both time points). A small potential signal is observed from the oositive control <i>gfp</i> expression device at 280 minutes (P=0.012) & 300 minutes (P=0.006). This significance is lost after 300 minutes (P=0.262). See <a href="https://2015.igem.org/Team:Birkbeck/ Results/Table_S2" ><b>Table S2</b></a> for more details. In order to verify these results & to test for the feasibility of scaling down to a 96-well microtitre plate assay, a 10 hour growth curve was conducted in a 96-well microtitre plate (see <b>Fig. 6-8</b>).</p> | + | <p>Back to main Research page</p> |
| − | <!--Multiple Comparison table link for OD 395 nm (table S2); https://2015.igem.org/Team:Birkbeck/Results/Table_S2. issue sorted, this page is good to go!.-->
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| − | <!--For sorting out code to make it look decent on our wiki; https://2015.igem.org/Team:Birkbeck/Results/adjusting_table_code ; use this link. its a spoof web page.-->
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| − | <center><img src="https://static.igem.org/mediawiki/2015/d/d7/Viable_count_1_hour_%28dh5_alpha%29_team_birkbeck_iGEM_2015.jpg"></center> | + | |
| − | <p><b><u>Fig. 3: Viable Count of <i>E. coli</i> DH5α After 60 mins</u></b>.</p>
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| − | <p>In order to assess how many viable cells correspond to different optical densities, a viable count was conducted on <i>E. coli</i> DH5α1 at 60 minutes (<b>Fig. 3</b> & <b>Table 1</b>), 175 minutes (<b>Fig. 5</b> & <b>Table 2</b>) & 225 minutes (data not shown due to high level of contamination).</p>
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| − | <p>Considering the OD<sub>600</sub> of the <i>E. coli</i> DH5α1 cultures at 60 mins, triplicate cultures were OD<sub>600</sub> = 0.029, 0.01 & 0.025<!--0.021 mean-->. The viable count of each of the cultures gave a mean of 2.57×10<sup>6</sup> cfu/mL (<b>Table 1</b>). It can therefore be concluded that an <i>E. coli</i> DH5α culture at an OD<sub>600</sub> = 0.021 corresponds to approximately 2.57×10<sup>6</sup> cfu/mL.</p>
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| − | <table class="Default PivotTable" data-lookName="Default" data-rowLabelWidth="1" data-colLabelHeight="1" data-NumRows="2" data-NumCols="5" data-rowLabels="Corner" data-decimal-char="." data-col-labels="N;Minimum;Maximum;Mean;Std. Deviation" data-row-labels="Viable.Count;Valid N (listwise)" >
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| − | <caption class="title" style="width:522px">Descriptive Statistics of 1 hour Viable Count of <i>E. coli</i> DH5α.<span class="details"></span></caption>
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| − | <td class="columnLabels dataAreaLeft vCC role3">N</td>
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| − | <td class="columnLabels vCC role3">Minimum</td>
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| − | <td class="columnLabels vCC role3">Maximum</td>
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| − | <td class="columnLabels vCC role3">Mean</td>
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| − | <td class="columnLabels vCC role3">Std. Deviation</td>
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| − | <td class="rowLabels dataAreaTop role3">Viable Count</td>
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| − | <td class=" e dataAreaTop dataAreaLeft vCC">9</td>
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| − | <td class=" e dataAreaTop vCC">1600000</td>
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| − | <td class=" e dataAreaTop vCC">3750000</td>
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| − | <td class=" e dataAreaTop vCC">2566666.67</td>
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| − | <td class=" e dataAreaTop vCC">627495.020</td>
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| − | <td class="rowLabels hCR role3">Valid N (listwise)</td>
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| − | <td class=" o dataAreaLeft hCR vCC">9</td>
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| − | <!--End of descriptive Stats table-->
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| − | <p><b><u>Table 1: Descriptive Statistics of 60 minutes Viable Count of <i>E. coli</i> DH5α.</u></b>.</p>
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| − | <center><img src="https://static.igem.org/mediawiki/2015/e/e6/Viable_count_of_DH5_alpha_after_175_mins_team_birkbeck_iGEM_2015.jpg"></center>
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| − | <p><b><u>Fig. 4: Viable Count of <i>E. coli</i> DH5α After 175 mins</u></b>.</p>
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| − | <p>At 175 minutes into growth, the <i>E. coli</i> DH5α1 cultures had OD<sub>600</sub> of; 0.255, 0.216 & 0.262<!--mean = 0.244-->. The viable count of each of the cultures gave a mean of 1.33×10<sup>8</sup> cfu/mL (<b>Table 2</b>). It can therefore be concluded that an <i>E. coli</i> DH5α culture at an OD<sub>600</sub> = 0.244 corresponds to approximately 1.33×10<sup>8</sup> cfu/mL. Considering the previous OD<sub>600</sub> (0.021), there is approximately a 10-fold increase in OD<sub>600</sub> which corresponds to nearly a 100-fold increase in viable cells.</p>
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| − | <table class="Default PivotTable" data-lookName="Default" data-rowLabelWidth="1" data-colLabelHeight="1" data-NumRows="2" data-NumCols="5" data-rowLabels="Corner" data-decimal-char="." data-col-labels="N;Minimum;Maximum;Mean;Std. Deviation" data-row-labels="Viable.Count;Valid N (listwise)" >
| + | |
| − | <caption class="title" style="width:547px"><span class="details">Descriptive Statistics of 175 Minutes Viable Count of <i>E. coli</i> DH5α.</span></caption>
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| − | <td class="cornerLabels"> </td>
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| − | <td class="columnLabels dataAreaLeft vCC role3">N</td>
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| − | <td class="columnLabels vCC role3">Minimum</td>
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| − | <td class="columnLabels vCC role3">Maximum</td>
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| − | <td class="columnLabels vCC role3">Mean</td>
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| − | <td class="columnLabels vCC role3">Std. Deviation</td>
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| − | </tr>
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| − | <tr>
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| − | <td class="rowLabels dataAreaTop role3">Viable Count</td>
| + | |
| − | <td class=" e dataAreaTop dataAreaLeft vCC">9</td>
| + | |
| − | <td class=" e dataAreaTop vCC">90000000</td>
| + | |
| − | <td class=" e dataAreaTop vCC">175000000</td>
| + | |
| − | <td class=" e dataAreaTop vCC">133333333.33</td>
| + | |
| − | <td class=" e dataAreaTop vCC">29154759.474</td>
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| − | </tr>
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| − | <tr>
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| − | <td class="rowLabels hCR role3">Valid N (listwise)</td>
| + | |
| − | <td class=" o dataAreaLeft hCR vCC">9</td>
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| − | <td class=" o hCR vCC"> </td>
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| − | <td class=" o hCR vCC"> </td>
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| − | <td class=" o hCR vCC"> </td>
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| − | </table>
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| − | </div></body></center>
| + | |
| − | <!--End of the descriptive statistics table for 175 minutes of growth-->
| + | |
| − | <p><b><u>Table 2: Descriptive Statistics of 175 minutes Viable Count of <i>E. coli</i> DH5α.</u></b></p>
| + | |
| − | <br>
| + | |
| − | <center><IMG SRC="https://static.igem.org/mediawiki/2015/8/8a/Growth_curve_601_nm_96-microtitre_Team_birkbeck_iGEM_2015_data.jpg "></center>
| + | |
| − | <p><b><u>Fig. 5: Growth Curves of Different Strains of <i>E. coli</i> DH5α Following Culture Optical Density at 601 nm</u></b>.</p>
| + | |
| − | <br>
| + | |
| − | <p>All data analysis tables for the OD<sub>601</sub> growth curves are in; <a href="https://2015.igem.org/Team:Birkbeck/table_S3">Table S3</a>, <a href="https://2015.igem.org/Team:Birkbeck/table_S5">Table S5</a> & <a href="https://2015.igem.org/Team:Birkbeck/table_S6">Table S6</a> for 0-200 minutes, 220-420 minutes & 440-580 minutes respectively. Comparing the growth of <i>E. coli</i> DH5α containing P1-<i>gfp</i> expression device with the <i>E. coli</i> DH5α, there is no significant difference between the two cultures at 80 minutes (P=0.943), however, at 100 minutes there is a very highly significant difference between the 2 strains of <i>E. coli</i> DH5α (P<0.001). The OD<sub>601</sub> of <i>E. coli</i> DH5α containg the P1-<i>gfp</i> expression device remains at a significantly lower that the <i>E. coli</i> DH5α untill 400 minutes (P=0.441).</p>
| + | |
| − | <p>Comparing the <i>E. coli</i> DH5α P1-<i>gfp</i> expression device with the positive control <i>gfp</i> <i>E. coli</i> DH5α cultures, the OD<sub>601</sub> remains insignificantly different at 100 minutes (P=0.848) with significance being observed at 120 minutes (P<0.001). The significance is observed until 280 minutes into the growth curves (P=0.065). Interesting;ly, this is a shorter window of significance compared to <i>E. coli</i> P1-<i>gfp</i> expression device & <i>E. coli</i> DH5α (160 minute Vs 300 minutes respectively).</p> | + | |
| − | <p>Comparing P1 & P2-<i>gfp</i> expression devices in <i>E. coli</i> DH5α, no significance is observed at 100 minutes (P=0.132). P1-<i>gfp</i> expression device is very highly significantly lower (P<0.001) than P2-<i>gfp</i> expression device after 120 minutes of culturing. This significance is observed until 320 minutes of culturing (P=0.075).</p>
| + | |
| − | <p>When comparing the positive control, P2-<i>gfp</i> & <i>E. coli</i> DH5α, there is no significant difference throughout the growth curve. After 420 minutes, there is no significant difference between any of the <i>E. coli</i> DH5α cultures OD<sub>601</sub> (P=0.81).</p>
| + | |
| − | <!--Table S3 (0-200 mins); https://2015.igem.org/Team:Birkbeck/table_S3, (change to S4!!!)Tables S5 (220-420); https://2015.igem.org/Team:Birkbeck/table_S5, Table S6 (440-580 minutes); https://2015.igem.org/Team:Birkbeck/table_S6 --> | + | |
| − | <br>
| + | |
| − | <center><IMG SRC="https://static.igem.org/mediawiki/2015/d/d0/Growth_curve_501_nm_microtitre_data_Team_birkbeck_iGEM_2015.jpg"></center>
| + | |
| − | <p><b><u>Fig. 6: Growth Curves of Different Strains of <i>E. coli</i> DH5α Following Culture Optical Density at 501 nm</u></b>.</p>
| + | |
| − | <br>
| + | |
| − | <p>All data analysis tables for the OD<sub>501</sub> growth curves are in; <a href="https://2015.igem.org/Team:Birkbeck/ table_S7"> Table S7< /a>, <a href=" https://2015.igem.org/Team:Birkbeck/table_S8" >Table S8</a> & <a href=" https://2015.igem.org/Team:Birkbeck/table_S9" >Table S9</a> for 0-200 minutes, 220-420 & 440-580 minutes respectively. Comparing the growth of <i>E. coli</i> DH5α containing P1-<i>gfp</i> expression device with the <i>E. coli</i> DH5α, there is no significant difference between the two cultures at 80 minutes (P=0.987). After 100 minutes there is a highly significant difference between the two cultures (P=0.003). This difference remains significant until 400 minutes into culturing (P=0.093).</p> | + | |
| − | <p>Comparing the <i>E. coli</i> DH5α P1-<i>gfp</i> expression device with the positive control <i>gfp</i> <i>E. coli</i> DH5α cultures, the OD<sub>501</sub> remains insignificantly different at 100 minutes (P=0.85) with significance being observed at 120 minutes (P<0.001). The P1-<i>gfp</i> expression device culture remains significantly lower than the positive control <i>gfp</i> expression device until 320 minutes (P=0.053).</p>
| + | |
| − | <p>Comparing P1 & P2-<i>gfp</i> expression devices in <i>E. coli</i> DH5α, no significance is observed at 100 minutes (P=0.403). P1-<i>gfp</i> expression device is very highly significantly lower (P<0.001) than P2-<i>gfp</i> expression device after 120 minutes of culturing. This significance is observed until 320 minutes of culturing (P=0.096).</p>
| + | |
| − | <p>When comparing the positive control, P2-<i>gfp</i> & <i>E. coli</i> DH5α, there is no significant difference throughout the growth curve. After 420 minutes, there is no significant difference between any of the <i>E. coli</i> DH5α cultures OD<sub>501</sub> (P=0.09). These results are identical to the results obtained in th OD<sub>501</sub> absorption of the <i>E. coli</i> DH5α cultures.</p>
| + | |
| − | | + | |
| − | <!--Table S7 (0 mins - 200 mins); https://2015.igem.org/Team:Birkbeck/table_S7 , Table S8 (240-420 minutes); https://2015.igem.org/Team:Birkbeck/table_S8 Table S9 (440-580 mins); https://2015.igem.org/Team:Birkbeck/table_S9-->
| + | |
| − | <br>
| + | |
| − | <center><img src="https://static.igem.org/mediawiki/2015/4/4a/Growth_curve_475_nm_microtitre_team_birkbeck_iGEM_2015.jpg"></center>
| + | |
| − | <p><b><u>Fig. 7: Growth Curves of Different Strains of <i>E. coli</i> DH5α Following Culture Optical Density at 475 nm</u></b>.</p>
| + | |
| − | <br>
| + | |
| − | <p>All data analysis tables for the OD<sub>475</sub> growth curves are in; <a href="https://2015.igem.org/Team:Birkbeck/Table_S10">Table S10</a>, <a href="https://2015.igem.org/Team:Birkbeck/table_S11">Table S11</a> & <a href="https://2015.igem.org/Team:Birkbeck/table_S12">Table S12</a> for 0-200 minutes, 220-420 & 440-580 minutes respectively. Comparing the growth of <i>E. coli</i> DH5α containing P1-<i>gfp</i> expression device with the <i>E. coli</i> DH5α, there is no significant difference between the two cultures at 100 minutes (P=0.982). After 120 minutes there is a highly significant difference between the two cultures (P=0.003). This difference remains significant until 440 minutes into culturing (P=0.745).</p>
| + | |
| − | <p>Comparing the <i>E. coli</i> DH5α P1-<i>gfp</i> expression device with the positive control <i>gfp</i> <i>E. coli</i> DH5α cultures, the OD<sub>475</sub> remains insignificantly different at 100 minutes (P=0.844) with significance being observed at 120 minutes (P<0.001). The P1-<i>gfp</i> expression device culture remains significantly lower than the positive control <i>gfp</i> expression device until 340 minutes (P=0.19).</p>
| + | |
| − | | + | |
| − | <p>Comparing P1 & P2-<i>gfp</i> expression devices in <i>E. coli</i> DH5α, no significance is observed at 100 minutes (P=0.464). P1-<i>gfp</i> expression device is very highly significantly lower (P<0.001) than P2-<i>gfp</i> expression device after 120 minutes of culturing. This significance is observed until 340 minutes of culturing (P=0.163).</p>
| + | |
| − | | + | |
| − | <p>When comparing the positive control, P2-<i>gfp</i> & <i>E. coli</i> DH5α, there is no significant difference throughout the growth curve. Conducting a one-way ANOVA of the culture density at 440+ minutes shows there is a highly significant difference between the means (P=0.003). The multiple comparisons table shows no significant difference between any of the individual data point (data not shown).</p>
| + | |
| − | | + | |
| − | <!--Table S10 (0 mins-200 mins); https://2015.igem.org/Team:Birkbeck/Table_S10 Table S11 (220-420); https://2015.igem.org/Team:Birkbeck/table_S11 Table S12 (440-580 minutes); https://2015.igem.org/Team:Birkbeck/table_S12, P1 remains statistically lower than DH5 until 440 mins (P=0.745) giving the P=0 value.-->
| + | |
| − | <br>
| + | |
| − | <center><img src="https://static.igem.org/mediawiki/2015/8/8b/Growth_curve_395_microtitre_team_birkbeck_iGEM_2015.jpg "></center>
| + | |
| − | <p><b><u>Fig. 8: Growth Curves of Different Strains of <i>E. coli</i> DH5α Following Culture Optical Density at 395 nm</u></b>.</p>
| + | |
| − | <br>
| + | |
| − | <p>All data analysis tables for the OD<sub>395</sub> growth curves are in; <a href="https://2015.igem.org/Team:Birkbeck/Table_S13">Table S13</a>, <a href="https://2015.igem.org/Team:Birkbeck/table_S14">Table S14</a> & <a href="https://2015.igem.org/Team:Birkbeck/table_S15">Table S15</a> for 0-200 minutes, 220-420 & 440-580 minutes respectively. Comparing the growth of <i>E. coli</i> DH5α containing P1-<i>gfp</i> expression device with the <i>E. coli</i> DH5α, there is no significant difference between the two cultures at 80 minutes (P=0.937). After 100 minutes there is a highly significant difference between the two cultures (P<0.001). This difference remains significant until 440 minutes into culturing (P=0.083)</p>
| + | |
| − | <p>Comparing the <i>E. coli</i> DH5α P1-<i>gfp</i> expression device with the positive control <i>gfp</i> <i>E. coli</i> DH5α cultures, the OD<sub>395</sub> remains insignificantly different at 80 minutes (P=0.992) with significance being observed at 100 minutes (P=0.011). The P1-<i>gfp</i> expression device culture remains significantly lower than the positive control <i>gfp</i> expression device until 440 minutes (P=0.325).</p>
| + | |
| − | <p>Comparing P1 & P2-<i>gfp</i> expression devices in <i>E. coli</i> DH5α, no significance is observed at 100 minutes (P=0.358). P1-<i>gfp</i> expression device is very highly significantly lower (P<0.001) than P2-<i>gfp</i> expression device after 120 minutes of culturing. This significance is observed until 340 minutes of culturing (P=0.171).</p>
| + | |
| − | <p>When comparing the positive control, P2-<i>gfp</i> & <i>E. coli</i> DH5α, there is no significant difference throughout the growth curve. Conducting a one-way ANOVA of the culture density at 440+ minutes shows there is a highly significant difference between the means (P<0.001). The multiple comparisons table shows no significant difference between any of the individual data point (data not shown).</p>
| + | |
| − | <!--Table S13 (0-200 minutes); https://2015.igem.org/Team:Birkbeck/Table_S13 Table S14 (220-420 mins); https://2015.igem.org/Team:Birkbeck/table_S14 Table S15 (440-580 mins); https://2015.igem.org/Team:Birkbeck/table_S15 (the P1 is not significant at 440 minutes [P=0.083]-->
| + | |
| − | <br>
| + | |
| − | | + | |
| − | <center><img src="https://static.igem.org/mediawiki/2015/9/9a/Fluorescence_growth_curve_of_multiple_strains_of_E._coli_DH5_alpha_team_Birkbeck_iGEM_2015.jpg "></center>
| + | |
| − | <p><b><u>Fig. 9: Growth Curves of Different Strains of <i>E. coli</i> DH5α Following Culture Fluorescence</u></b>.</p>
| + | |
| − | <br>
| + | |
| − | <p>All data analysis tables for the culture fluorescence growth curves are; <a href="https://2015.igem.org/Team:Birkbeck/table_S16">Table S16</a>, <a href="https://2015.igem.org/Team:Birkbeck/Table_S17 ">Table S17</a> & <a href="https://2015.igem.org/Team:Birkbeck/table_S18">Table S18</a> for 0-200 minutes, 220-420 & 440-580 minutes respectively. Comparing the P1-<i>gfp</i> expression device with <i>E. coli</i> DH5α, at 0 minutes there is a highly significant difference between the two cultures fluorescence (P=0.005). This significance is observed until 100 minutes (P=0.427). There is an insignificant difference between the two cultures until 160 minutes (P<0.001). At 220 minutes into the growth curve, the fluorescence between P1<i>gfp</i> expression device is insignificant (P=0.277) with significance being observed at 240 minutes (P=0.001). The fluorescence of P1-<i>gfp</i> expression device remains higher than the <i>E. coli</i> DH5α culture.</p>
| + | |
| − | <p>Comparing the positive control <i>gfp</i> expression device with <i>E. coli</i> DH5α, at no point in the growth curve does the fluorescence of the positive control <i>gfp</i> expression device increase above that of the <i>E. coli</i> DH5α culture. Even at 580 minutes of culturing the positive control does not increase in fluorescence above the <i>E. coli</i> <i>E. coli</i> DH5α (P=0.677).</p> | + | |
| − | <p>Comparing the P2-<i>gfp</i> expression device with <i>E. coli</i> DH5α, Initially there is no significant difference between the two cultures in fluorescence (P=1). There is a highly significant Increase in fluorescence from P2 at 180 minutes (P=0.007). At 200 minutes, there is no significant difference in fluorescence observed between P2 + <i>E. coli</i> DH5α (P=0.146). Insignificance of fluorescence between the two cultures is observed until 500 minutes of culturing (P=0.038). The fluorescence from the P2-<i>gfp</i> expression device remains significantly higher than <i>E. coli</i> DH5α throughout the rest of the growth curve.</p>
| + | |
| − | <p>Comparing the P1-<i>gfp</i> expression device with the positive control <i>gfp</i> expression device there is a significantly higher fluorescence from 0 minutes (P=0.034) & 20 minutes (P=0.038). At 40 minutes of culturing there is no significant difference in fluorescence (P=0.164). At 60 minutes the P1-<i>gfp</i> expression device has a significantly higher fluorescence than the positive control (P=0.017). The significance is not observed at 80 minutes (P=0.849). There is no significant fluorescence from P1 compared to the positive control until 180 minutes (P=0.009). No significance is observed between the two promoters until 340 minutes where P1 has a higher fluorescence (P=0.019). The P1-<i>gfp</i> expression device has a higher fluorescence compared to the positive control at 360 minutes (P=0.024) and becomes insignificant at 380 minutes (P=0.245) where it remains insignificant for the result of the culturing time.</p>
| + | |
| − | <p>Comparing P2-<i>gfp</i> expression device with the positive control, there is no time point where the P2-<i>gfp</i> expression device has a statistically higher fluorescence than the positive control <i>gfp</i> expression device.</p>
| + | |
| − | <p>When comparing the data sets for the P1 & P2 <i>gfp</i> expression devices, there is no significant difference until 60 minutes (P=0.021). At 60 minutes, the P1-<i>gfp</i> expression device has a higher fluorescence. There is no significance between P1 & P2 <i>gfp</i> expression devices at 80 minutes (P=0.646) & no other time points show significance between these two cultures.</p>
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| − | <br><hr><br>
| + | |
| − | <p>Results discussion & credit for the work are shown in the <a href="https://2015.igem.org/Team:Birkbeck/Discussion">Discussion</a> section of this website.</p>
| + | |
| − | <!--For the fluorescence data, the table has to be split into 3 different pages! bit of a ball-ache but it has to be done its just a really big file. I am guessing the same has to be done with the absorption spectra data :( lots more work needs doing on this matter. Table S16 (0-200); https://2015.igem.org/Team:Birkbeck/table_S16 Table S17 (220-420); https://2015.igem.org/Team:Birkbeck/Table_S17 Table S18 (440 - 580 minutes); https://2015.igem.org/Team:Birkbeck/table_S18-->
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| − | <a href="https://2015.igem.org/Team:Birkbeck/Conclusion">Up next: Conclusions</a>
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