Table 2. Bestkeeper software output of five housekeeping genes tested in rectal cancer.

	GAPDH	PUM1	B2M	RPN1	PMM1
n	20	20	20	20	20
geo Mean [CP]	15.53	19.70	12.13	18.11	21.84
ar Mean [CP]	15.55	19.73	12.22	18.14	21.87
min [CP]	13.69	18.37	9.72	16.66	19.89
max [CP]	17.18	21.52	14.53	19.64	23.71
std dev [± CP]	0.65	0.94	1.21	0.88	0.94
CV [% CP]	4.18	4.74	9.92	4.85	4.29