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하나님의교회지식사전: 어머니하나님 https://watv.org/ko/bible_word/cord-and-placenta/ The Umbilical Cord and Placenta Which Connect Mom and Baby - World Mission Society Church of God The umbilical cord and placenta which were once considered unsanitary and were treated as infectious waste are now receiving much attention in the medical world. The reason behind this is that they have discovered abundant stem cell..