TEM of a section of a stage 2, 16-cell embryo in vivo (original magnification x10,500). Blebbing of the nuclear membrane is absent (arrows).
M = mitochondria
Nl = nucleolus
From: Pereda and Croxatto, 1992. Reproduced with permission of the Annals, Academy of Medicine, Singapore.
Keywords: blebbing, mitochondria, nuclear membrane, nucleolus
Source: The Virtual Human Embryo.