Bioassay of Human Tissues for Ecdysone.

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Abstract
Fresh cadaveric tissue was obtained at autopsy, extracted and assayed for activity by injecting the posterior larval segment of ligated Calliphora in which the anterior segment alone pupated. No activity was found in liver, brain, skeletal muscle, small intestine, lung, colon, kidney, spleen, testis, cardiac muscle, stomach, adrenal, pancreas, thyroid or uterus. Therefore, no evidence was obtained that ecdysone is contained in the human tissues tested or the amount is so small that the sensitive method used failed to detect it.