Fig. 6From: Circadian rhythm of melatonin secretion and growth-related gene expression in the tiger puffer Takifugu rubripes Daily and circadian expressions of ghrh2 mRNA in the diencephalon of tiger puffer under 12L:12D (a) and continuous light (b) conditions. The relative values of ghrh2 mRNA expressions were normalized against β-actin and then averaged. Means represented by different letters are significant (P < 0.05). Values are mean ± SEMBack to article page