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Effects of exposing 36 hpf embryos to 4 h of either normoxia or anoxia on subsequent mRNA levels of gonadal aromatase (cyp19a) in (a) female and (b) male adult zebrafish. The mRNA levels are normalized with ef1a and presented relative to the normoxia treatment. Values are mean + s.e.m. (n = 12). A significant difference is indicated by an asterisk (Welch two-sample t-test, p < 0.05).
