File:Canine oocyte 03.jpg

Transmission electron micrographs of control canine geminal vesicle (GV) oocytes

A) Semi-thin section of a COC with a central nucleus (N). The cumulus cells densely compact around the oocyte.

B) The cortical zone of oocyte, contains a small alignment of cortical granules (CG) beneath the plasma membrane and numerous mitochondria (M).

C) The normal shape of lipid droplets (L) and mitochondria (M) scatter in the pericortical cytoplasm of the oocyte.

D) Smooth endoplasmic reticulum (SER) are scattered in pericortical cytoplasm.

E) Higher magnification of mitochondria showing outer and inner membranes (cristae) with matrix inside.

F) Higher magnification of cortical granule (CG) demonstrates the round shape with strong electron dense and smooth endoplasmic reticulum (SER).

C = cytoplasm, ZP = zona pellucida, N = nucleus, Cu = cumulus cells, CG = cortical granule, L = lipid droplet, SER = smooth endoplasmic reticulum.

1477-7827-8-70-3.jpg

Reference

<pubmed>20565987</pubmed>| Reprod Biol Endocrinol.

Turathum et al. Reproductive Biology and Endocrinology 2010 8:70 doi:10.1186/1477-7827-8-70

© 2010 Turathum et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.