Reptilian and avian follicular hierarchi
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Etches, R. J. ;Petitte, J. N.
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Article
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1990
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John Wiley and Sons
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English
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The presence of an ovarian follicular hierarchy is a characteristic feature of reptiles and birds. The hierarchy contains follicles at all stages of maturation and therefore, varying degrees of sensitivity to the ovulation-inducing effects of the gonadotropins. In the hen, ovulability is gained as t