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| Description: And the cycle of life begins again: this 6 day old human embryo is beginning to implant into the endometrium, the lining of the uterus. Picture Stats: Views: 1161 Filesize: 69.51kB Height: 447 Width: 599 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=9010 Keywords: 6 day old human embryo |