Mammary gland gestation, serum progesterone remains at a stably high concentration so signaling through its receptor is continuously activated. As one of the transcribed genes, Wnts secreted from mammary epithelial cells act paracrinely to induce more neighboring cells' branching. When the lactiferous duct tree is almost ready, "leaves" alveoli are differentiated from luminal epithelial cells and added at the end of each branch. In late pregnancy and for the first few days after giving birth, colostrum is secreted. Milk secretion (lactation) begins a few days later due to reduction in circulating progesterone and the presence of another important hormone prolactin, which mediates
Prayer Before Birth a world devoid of compassion, love and remorse through the haunting appeal of the unborn infant. The poem reflects the poet's utter dejection and hopelessness expressing the thought that the world will not correct itself, but perpetuate its evils in an ever-ascending spiraling pattern of violence. The foregone conclusion that the child will live a life of treason and its apology proffered in advance for its death after it has lived as a "lethal automaton", offers a picture of a world akin to nothing but hell. Prayer Before Birth Prayer Before Birth is a poem written by the Irish poet