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2.1.8.7: Cheek Cell DNA Extraction
Opening the book…
Using Cytobrush
Use a sterile cytobrush and insert into mouth.
Brush the cytobrush on the inside of your cheek 25 times.
Swirl the cytobrush in 100 μl of Chelex suspension (10% w/v).
Place a centrifuge tube with Chelex and cell suspension on a 100 °C heat block for 10 minutes.
Centrifuge the tubes at maximum speed for 5 minutes.
DNA is in the supernatant. Avoid beads at the bottom.
Store DNA at -20 °C.
PCR with PCR Beads
Add 22 μl of the primer mix (forward and reverse) to beads.