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All-male rainbow trout testis at 136 dpf exposed chronically to 1 and 10 µg/L EE2 for 76 days. HES. Ci: cils; E: columnar epithelial cells; BM: basement membrane; Ep: epithelioid; OM: ovarian-like morphology. Scale bars A = 50 µm; B = 500 µm.
