Definition of Upregulation
Upregulation: An increase in the number of receptors on the surface of target cells, making the cells more sensitive to a hormone or another agent. For example, there is an increase in uterine oxytocin receptors in the third trimester of pregnancy, promoting the contraction of the smooth muscle of the uterus.Source: MedTerms™ Medical Dictionary
Last Editorial Review: 6/14/2012
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