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Scientific Correspondence
Nature 389, 801 (23 October 1997) | doi:10.1038/39764
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Molecular Biologists and Biochemists
- University of Minnesota
- Minnesota, USA
Postdoctoral Fellow - Computational Genomics - Team 78 – Ref: 80464
- Wellcome Trust Sanger Institute
- Hinxton, Cambridgeshire CB10 1, UK
Sex on the brain
S. Marc Breedlove1
Abstract
Reports of morphological differences between the brains of humans with different sexual orientation1 or gender identity2 have furthered speculation that such behaviours may result from hormonal or genetic influences on the developing brain. However, the causal chain may be reversed; sexual behaviour in adulthood may have caused the morphological differences. I report how adult sexual experience alters the appearance of rat motor neurons as revealed by Nissl staining, the same technique used in post-mortem human studies.
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