Bile from a patient with anomalous pancreaticobiliary ductal union promotes the proliferation of human cholangiocarcinoma cells via COX-2 pathway

Table 2 Expression level of COX-2 mRNA

Group	n	COX-2/β-actin	t	P
A	6	0.4322 ± 0.0448	bt = 11.556, dt = 5.010	bP < 0.001, dP = 0.004
B	6	0.2267 ± 0.0638	bt = 1.820	bP = 0.128
C	6	0.1367 ± 0.0653

COX-2 mRNA expression level was determined by COX-2/β-actin protein. Data were expressed as ^-x±s, b vs C (PBS), d vs B (normal bile), A: APBDU.