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Expanding embryo showing details of a mitochondrion

Very high power TEM of an expanding stage 3 embryo in vitro showing details of a mitochondria within a trophoblast cell (original magnification x35,000). Mitochondria are highly elongated with well-defined transverse cristae.

L = lysosome
Z = zona pellucida

From: Sathananthan and Trounson, 2000

Keywords: cristae, lysosome(s), mitochondria within trophoblast cell, trophoblast cells, zona pellucida

Source: The Virtual Human Embryo.