Response of host embryonic chicks to grafts of additional adrenal glands. III. Response of adrenal glands and gonads to the presence of homogenates of adrenal glands

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Abstract
The effect, on host adrenal glands and gonads, of homogenates of adrenal glands from 18-day embryonic chicks has been tested by injecting homogenates onto the chorioallantoic membrane of host 8-day-old embryos.In control embryos the adrenal gland of the male had a greater growth rate than did that of the female. The growth rate of the adrenal gland of the male hosts was unaffected by the homogenate, whereas that of the female hosts was stimulated. The gonads were stimulated to undergo hyperplasia under the influence of the homogenate.The adrenal gland hypertrophy was confined to the cortex and along with the hypertrophy of the gonads was mediated by stimulation of mitotic activity.These data support the thesis that the adrenal gland possesses a specific stimulatory agent controlling its own growth and that the adrenal gland exerts a controlling influence over growth of the gonads.

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