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.