DNA Extraction Protocol. 
Create mixture of CsCl, Proteinase K, and SDS.
Mix and incubate 1 hour at 56°C.
Cool to room temperature. 
Add an equal volume of phenol and invert several times.
Spin 3000g (6000 rpm on microfuge), 5 minutes, room temperature.
Carefully transfer the supernatant with a wide-bore pipette to a fresh tube.
Add an equal volume of phenol:choroform (1:1), invert.
Spin again, 3000g (6000 rpm on microfuge), 5 minutes, room temperature.
Transfer the supernatant, as done before.
Add an equal volume of chloroform and invert.
Spin again, 3000g (6000 rpm on microfuge), 5 minutes, room temperature.
Transfer the supernatant, as done before.
