「資料集・リンク」

「専門家向けデータベース」

by MOE and Chemicals Evaluation and Research Institute, Japan (CERI)

Atlas of Gonadal Histopathology in Medaka Exposed to Endocrine Disruptors

Effect of androgen exposure

Testis-ova

Testis-ova from a fish exposed to 27.7 ng/L of methyltestosterone from fertilized egg to 61-d posthatch (Bouin, H&E).
O: oocyte, Sz: spermatocyte, Sc: spermatozoa.
Three oocytes exist within the testicular tissue. This fish probably have been on the process of sex reversal from female to male.

Ovary

Ovary from a fish exposed to 9.98 ng/L of methyltestosterone from fertilized egg to 61-d posthatch (Bouin, H&E).
No effects are observed.

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