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Section of a blastomere of an embryo

Very high power TEM of a section of a blastomere of a stage 2 embryo in vivo (original magnification x60,000). Mitochondrial vesicles are very closely related. Notice the diffuse mitochondrial membranes (arrows).

From: Pereda and Croxatto, 1992. Reproduced with permission of the Annals, Academy of Medicine, Singapore.

Keywords: blastomere, mitochondrial membranes, mitochondrial vesicles, stage 2 embryo, vesicles

Source: The Virtual Human Embryo.