Lactation

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Lactation is the process of production of milk in the mammary glands of females towards the end of pregnancy and after the birth of the young one. Secretion and storage of milk generally begins after birth of young one, usually within 24 hours under the influence of prolactin (PRL) hormone secreted by anterior lobe of pituitary gland.
However, the ejection of milk is stimulated by the Hormone Oxytocin (OT) released from the posterior lobe of pituitary gland.
The first milk which comes from the mammary glands of mother just after childbirth, for 2-3 days is called colostrum.
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