Fig. 58. Very high power TEM of an early .stage 3 embryo in vitro showing details of mitochondria within an inner cell mass cell (original magnification x35,000). The density of the mitochondria is decreasing and the arch-like cristae are mostly peripheral. Mitochondria are closely associated with the rough endoplasmic reticulum (R).
(From: Sathananthan and Trounson, 2000.)
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