Table 1.

Yield and purity of DNA extracted from 552 colon and breast samples

Sample type	Mean DNA yield (μg)	Standard deviation	Median OD 260:280	Median OD 260:230
Colon (n = 276)	3.15	0.14	1.73	1.72
Breast (n = 276)	3.25	0.87	1.49	1.09