Sexual Dimorphism in the Preoptic Area of the Rat

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Science  20 Aug 1971:
Vol. 173, Issue 3998, pp. 731-733
DOI: 10.1126/science.173.3998.731


A quantitative evaluation of the relative distribution of synapses on dendritic shafts and spines serves to differentiate the neuropil of the preoptic area from that of the ventromedial hypothalamic nucleus; it also shows that the neuropil of the preoptic area is sexually dimorphic.