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Fig. 1. Dose-dependent effects of 11-ketotestosterone (11KT), testosterone (T),
cortisol (C) and estradiol (E2) on contractile force of ventricle strips from
male (A) and female (B) rainbow trout. At the concentrations tested,
contractile force in E2-treated ventricle strips from males did not differ
from that in control strips. Likewise, 11KT- or T-treated strips from females
did not differ from control strips. Values are means +
S.E.M. (N=710 strips) for
maximal response at each concentration.