To observe how a tiny ball of identical cells on its way to becoming a mammalian embryo first attaches to an awaiting uterine wall and then develops into nervous system, heart, stomach and limbs: This has been a highly-sought grail in the field of embryonic development for nearly 100 years. Scientists have now accomplished this feat.
Click here for original story, Advanced mouse embryos grown outside the uterus
Source: ScienceDaily