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Hypoblast cell

Very high power TEM of a hypoblast cell of a stage 3 embryo in vitro, 145-170 hours post-insemination (original magnification x30,600). Notice the nucleus (N), mitochondria (M), and dilated citernae (DC) of rough endoplasmic reticulum (RER) containing flocculent material.

From: Lopata et al., 1982. Reproduced with permission of the publisher, John Wiley & Sons.

Keywords: dilated cisternae of rough endoplasmic reticulum, hypoblast cell, mitochondria, nucleus

Source: The Virtual Human Embryo.