Lactation Physiology Series 1.3


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In part 3 of “The Biology of Milk Coming In,” you’ll learn about the role of progesterone in initiating the dramatic shift in mammary gland cellular machinery and organization that occurs in the first few days postpartum. By the end of this video, you’ll understand the role of tight junctions in the transition from colostrum to mature milk and you’ll be able to describe the changes in milk composition and volume that occur between days 0 and 5 postpartum.