Assertion: epidermis's cell | /r/CapableOf | differentiate into milk-producing cells
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Source sentences:
text: After ovulation, progesterone from the corpus luteum, an organ that develops in the ovary each time an ovum has been shed and has the function of preparing the uterus for receiving the developing embryo, causes the terminal ductal cells to differentiate into the milk-producing cells, which form acini.