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| Description: The fetal period begins at the 9th week after fertilization. Tissues and organs that developed during the embryonic period grow and differentiate. Very few new structures appear during this period. Picture Stats: Views: 274 Filesize: 1.1MB Height: 915 Width: 1050 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=40501 |