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Fig. 3. (A) Amount of glycoprotein
2 (GP
2) mRNA, (B)
follicle-stimulating hormone β (FSHβ) mRNA and (C) FSH in the
pituitaries of chum salmon in the central Bering Sea and the NW Pacific Ocean,
2001–2003. Fish were divided into immature fish and maturing adult I and
II on the basis of histological observation of the gonads. Value are means
± s.e.m. Significant differences among groups are indicated with
different letters (P<0.05 one-way ANOVA and Tukey's test). See
Table 1 for the number of
fish.