Testosterone Concentration in the Male Chick Brain: An Autoradiographic Survey

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Science  29 Jun 1973:
Vol. 180, Issue 4093, pp. 1381-1383
DOI: 10.1126/science.180.4093.1381


Differential uptake of [3H]testosterone in male chick brain was found in periventricular areas of preoptic-hypothalamic continuum. Concentration of silver grains for all decapitation periods was especially high in the medial preoptic area, particularly the nucleus praeopticus paraventricularis magnocellularis. Distribution of testosterone-sensitive cells is in agreement with studies showing neuroanatomical control of reproductive behavior by the avian forebrain.

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