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
Wilfrid Aka Wilfrid Aka Wilfrid Aka (born 16 June 1979) is a French-born Côte d'Ivoirean professional basketball player for JSA Bordeaux. He is also a member of the Côte d'Ivoire national basketball team. Aka has spent his entire career playing for teams in the French Ligue Nationale de Basketball. Aka joined his most recent team, Paris-Levallois Basket, before the 2008-09 season. He helped the team, which had just suffered relegation the year before, return to the top-tier of French basketball by winning the B Division of the League. He averaged 2.3 points per game and saw action in 26 games off the