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OUR TEAM
LAB 5 WRITE-UP
PCR Reaction Report
While pipetting, our group ran into no problems, it took a couple trials to get the hang of things but after that everything went smoothly. The pre-lab reading gave a great overview of what to expect. We were able to understand the difference between the first and second stop soon after getting the pipettor. As far as the final reactions, we had the same amount of liquid for each product. Also, we extracted all the liquid from the tubes so there was no liquid left in the DNA samples or the PCR reaction mix. Lastly, we were able to keep our labeling scheme the same as last the lab.
Fluorimeter Procedure
Imaging set-up
Samsung S8
- Go to camera menu
- Deactivate the flash
- Set ISO to 800
- Set White Balance to Auto
- Set exposure to highest setting
- Set Saturation to Highest setting
- Set contrast to the lowest setting
- Set Timer on phone
- Have camera on three shot mode
Slide and Phone Position setup
- Set phone base about 6 cm away from slide
- Make sure the image is at a 90 degree angle view
- Slide must be level with camera lens
- After starting camera timer, cover with given box to reduce light exposure
Placing Samples onto the Fluorimeter
- First, as a control, use the micropipette to place 160 microliters of water onto the slide
- Use smartphone to capture three images of water droplet
- Use micropipette to extract the water from the slide
- Use micropipette to distribute 80 microliters of SYBR GREEN 1 solution onto the slide
- Add an additional 80 microliters of the 0.25 concentration Calf Thymus DNA Solution onto the slide
- Use smartphone to capture three images of droplet
- Extract liquid from the slide using micropipette
- Repeat steps 3 through 7, except instead of adding the 0.25 concentration Calf Thymus DNA solution, add the solution of interest (0.5, 1, 2, 5, Positive Control, Negative Control, 1-1, 1-2, 1-3, 2-1, 2-2, 2-3)
Data Collection and Analysis
Images of High, Low, and Zero Calf Thymus DNA
Zero Calf Thymus DNA
Low Calf Thymus DNA
High Calf Thymus DNA
Calibrator Mean Values
| Initial Concentration of 2X Calf Thymus DNA solution |
Final DNA concentration in SYBR Green I solution (μg/mL) |
Sample Number |
RAWINTDEN DROP - BACKGROUND |
RAWINTDEN DROP - BACKGROUND |
RAWINTDEN DROP - BACKGROUND |
Mean |
Standard Deviation
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|
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|
Image 1 |
Image 2 |
Image 3 |
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| 5 |
2.5 |
C-1 |
3850171 |
3733338 |
3558373 |
3713960.667 |
146860.9172
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| 2 |
1 |
C-2 |
4549335 |
4602907 |
5067319 |
4739853.667 |
284855.4865
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| 1 |
0.5 |
C-3 |
3916289 |
3598140 |
2612292 |
3375573.667 |
679892.5456
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| 0.5 |
0.25 |
C-4 |
3010475 |
3300069 |
3147165 |
3152569.667 |
144872.6304
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| 0.25 |
0.125 |
C-5 |
2679559 |
2140249 |
2722682 |
2514163.333 |
324536.3536
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| 0 |
0 |
C-6 |
1958892 |
1956585 |
1961565 |
1959014 |
2492.240558
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Calibration curves
Images of Our PCR Negative and Positive Controls
Positive Control
Negative Control
PCR Results: PCR concentrations solved
| PCR Product TUBE LABEL |
MEAN (of RAWINTDEN DROP-BACKGROUND) |
PCR Product Concentration (µg/mL) |
Total Dilution |
Initial PCR Product Concentration (µg/mL)
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| G6+ |
3604229 |
1.604 |
12 |
19.248
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| G6- |
2289819 |
0.29 |
12 |
3.48
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| G6 1-1 |
1663413 |
-0.337 |
12 |
-4.044
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| G6 1-2 |
2506477 |
0.506 |
12 |
6.072
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| G6 1-3 |
2619408 |
0.619 |
12 |
7.428
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| G6 2-1 |
3001456 |
1.001 |
12 |
12.012
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| G6 2-2 |
2163073 |
0.163 |
12 |
1.956
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| G6 2-3 |
2329024 |
0.329 |
12 |
3.948
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PCR Results: Summary
- Our positive control PCR result was 19.248 μg/mL
- Our negative control PCR result was 3.48 μg/mL
Observed results
- Patient 40032 : All of the pictures taken of this patient's DNA showed very little concentration because the green dye was hardly fluorescent. This is proven by the average concentration of about 6 μg/mL.
- Patient 98170 : All of the pictures taken of this patient's DNA showed very little concentration because the green dye was hardly fluorescent. This is proven by the average concentration of about 4 μg/mL.
Conclusions
- Patient 40032 : This patient is very similar to the negative control. This patient does not have the SNP associated with the disease.
- Patient 98170 : This patient is very similar to the negative control. This patient does not have the SNP associated with the disease.
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