2025 CAST Conference • Dallas, TX

04 - Follow That Flush: Using Biotechnology for Early Disease Detection

Experiment Results:

RESULTS TABLE

Meaning

Molecular Weight 6751, 3652, 2827, 1568, 1118, 825, 630

Lane

Sample

Used to approximate DNA size

DNA Standard Marker

1

Sample 1 - Treatment Plant

Both Norovirus and E. coli are present in the sample

48502 bp, 4282 bp

2

Sample 2 - Community Center

4282 bp

3

E. coli is present in the sample

Sample 3 - University Dorms

Norovirus is present in the sample

48502 bp

4

Sample 4 - Downtown

48502 bp, 4282 bp

5

Both Norovirus and E. coli are present in the sample

Sample 5 - Regional Airport

No bands

6

Neither Norovirus nor E. coli are present in the sample

*NOTE– In most cases, PCR is not used to amplify sequences over 5000 base pairs. A larger band was used here to produce a clear difference in size between samples.

Related Experiment:

Follow That Flush: Using Biotechnology to Stop Outbreaks For 8 Gels. Wastewater testing is a public health tool that helps scientists track specific diseases in a com - munity. In this experiment, students use electropho- resis to test simulated water samples for bacteria and viruses. By learning how wastewater monitoring works, students see how biotechnology helps protect public health.

Cat. #922 Cat. #922-S

Features FlashBlue™ Stain Features SYBR® Safe Stain

46

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