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melanocyte-stimulating hormone

mel·a·no·cyte-stim·u·lat·ing hor·mone (plural mel·a·no·cyte-stim·u·lat·ing hor·mones)


noun 
Definition:
 
hormone regulating skin pigmentation: either of two hormones in vertebrates produced in the pituitary gland that darken the skin by regulating melanin dispersal

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