Summary
Gonadotropins (FSH+LH) and thyrotropin (TSH) stimulated the development of 12-day embryonic gonads, whereas adrenocorticotropin (ACTH) did not show any significant effect. It is concluded that the gonads of 12-day chick embryos have the capacity to respond to both gonadotropic and thyrotropic stimulation. This suggests that at the time when the hypothalamo-pituitary-thyroid axis begins to develop, the capacity of gonadal receptors to distinguish between gonadotropins and thyrotropin has not been established.
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Shahin, M.A., Csaba, G. & Dobozy, O. Effect of gonadotropins, thyrotropin, and adrenocorticotropin on the development of 12-day chick embryonic gonads. Wilhelm Roux' Archiv 190, 58–59 (1981). https://doi.org/10.1007/BF00868705
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DOI: https://doi.org/10.1007/BF00868705