Abstract
Conclusion
Reviews (11,12) of the vast literature on gonadal control of embryonic differentiation of sexual ducts in mammals reveal 3 general viewpoints: (a) that the developing testes and ovaries produce sex hormones and that each has 2 opposing actions, stimulation of ducts of corresponding sex and inhibition of ducts of opposite six; (b) that the testes produce hormone which stimulates male parts while suppressing the female, but the ovaries do not influence sexual differentiation; (c) that sexual differentiation is not governed by gonad hormones. The results here submitted, namely, absence of correlation between duct development and hormonal environment provided by host and the similar lack of correlation between ducts and accompanying gonads, support the third view. This conclusion conforms in general to that reached by Bronski (10).
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