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If you ask me about something like this, I will simply invite you to do some tests yourself, perhaps as a high-school science project. Perhaps it'll be you who makes the next great discovery!Our world is full of people who have found peace, fulfillment, and friendship by suspending their own reasoning and simply accepting a single authority that seems wise and good.You owe it to yourself to learn to use this invaluable internet resource.Not only will you find some information immediately, but you'll have references to journal articles that you can obtain by interlibrary loan, plus the names of the world's foremost experts and their institutions.Special thanks to my friend and colleague, Charles Wheeler M. If you're a private individual who's enjoyed this site, and want to say, "Thank you, Ed!
Numbers in are from the magnificent Slice of Life videodisk.Still good reading, especially for anyone offering easy, wrong answers to the world's problems. The mesoderm of the urogenital ridge gives rise to the ovarian stroma, just as it does for the Sertoli and Leydig cells of male embryos.In sub-Saharan Africa, one woman in 16 dies in childbirth, compared with one woman in about 5000 in the developed world (Br. Primordial germ cells from the yolk sac migrate to the ovarian (or testicular) stroma.(Some of these supposedly go astray and end up in other midline structures, explaining why "germ cell tumors" arise in the retroperitoneum, pineal, and anterior mediastinum.) In female embryos, the mullerian (paramesonephric) ducts result from infolding of the coelomic lining epithelium.They give rise to the surface epithelium of the ovaries, and the lining of the oviducts and uterus.