Dual effects of 8-Br-cAMP on differentiation and apoptosis of human esophageal cancer cell line Eca-109

Table 1 Apoptosis rate and ratio of differentiated cells (D)/proliferating cells (P) in each group

	E1 group	C1 group	E2 group	C2 group
Apoptosis rate	16%a	3.00%	54%c	4.00%
Ratio of D/P	1.7 (63/37)e	0.2 (17/83)	2.3 (70/30)g	0.16 (14/86)

Apoptosis rate:

^aP<0.05 vs C1 and E2 groups;

^cP<0.05 vs C2 group. Ratio of D/P:^eP<0.05 vs C1,

^gP<0.05 vs C2.