Differences in Proliferation of Primary Cultures of Vascular Smooth Muscle Cells Taken from Male and Female Rats

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Abstract
Vascular smooth muscle cells from thoracic aortas of 10-week-old rats were cultured on different substrates. Cells taken from male animals proliferated more quickly than those taken from females; this was true for all substrates, but the difference was accentuated by growth on collagen membranes. The relationship between these results and the sex-linked incidence of hypertension and atherosclerosis is discussed and a model for future studies proposed.