Figure 4

Comparisons of Cyp7b mRNA expression and 7α-OH PREG synthesis among different brain regions of chum salmon Oncorhynchus keta.
Male salmon captured at the pre-spawning ground during upstream migration were used. Each column and vertical line represent the mean ± s.e.m. of six independent samples. *P < 0.05 or **P < 0.01 versus pituitary gland.