Mammary glands develop next and consist of 15 to 24 lobes. Mammary glands are influenced by hormones activated in puberty. Shrinkage (involution) of the milk ducts is the final major change that ...
He said his experience was typical of "involution" in China today. Originally an anthropological term, "involution", or "neijuan" in Chinese - literally translated to an inward curling - refers to ...