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Figure 5 | Reproductive Biology and Endocrinology

Figure 5

From: In vitromaturation is slowed in prepubertal lamb oocytes: ultrastructural evidences

Figure 5

Ultrastructure and organelle distribution in prepubertal (a) and adult (b) ovine cumulus-oocyte-complexes (COCs) after 7 hours of IVM. a) Representative TEM micrograph showing the oocyte with no signs of nuclear reactivation. The nucleus (N) is surrounded by a complete and uniform nuclear envelope (NE) and a round electron-dense nucleolar body (Nu). Bar: 5 μm. b) Representative TEM micrograph showing an ooplasm with several vacuoles (Va) provided with an electron-dense membrane, and a SER close to electron-dense cortical granules (CGs); mv: microvilli. Bar: 1 μm.

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