File:Human pronuclear stage EM03-05.jpg

Human Pronuclear Stage - Mitochondria

Fig. 3. Spheroidal mitochondria represent the most common type of mitochondria to be encountered in the ovum (see also Fig. 5). They have limited numbers of cristae which are arranged roughly parallel to the outer mitochondrial membranes. ) X 46,000.

Fig. 4. Elongated mitochondria are less numerous than those of the spheroidal type. The elongated mitochondria are equipped with transversely oriented cristae and show symmetrical constrictions in the central region. X 40,000.

Fig. 5. Deepening of the indentations of the elongated mitoehondria may lead to the formation of two mitochondria of the spheroidal type. The possibility exists, however, that the structures in the micrograph represent two independent, spheroidal mitochondria, one of which has been sectioned in a tangential plane. X 46,000.

Pronuclear Stage EM: | Human pronuclei | Human pronuclei | Mitochondria | Mitochondria | Endoplasmic Reticulum | Endoplasmic Reticulum | Endoplasmic Reticulum | Cytoplasmic LameIlae | Cytoplasmic LameIlae | Crystalline inclusions | Crystalline inclusion | Pronuclear Envelope | Pronuclei Annulate Lamellae | Pronucleus | Nucleoli | Spermatozoon | Human pronuclei | Spermatozoon Components | Golgi complex | First Polar Body | First Polar Body | First Polar Body | Second Polar Body | Second Polar Body | pronuclei | polar body | fertilization | Carnegie stage 1

Reference

Zamboni L, Mishell DR, Bell JH & Baca M. (1966). Fine structure of the human ovum in the pronuclear stage. J. Cell Biol. , 30, 579-600. PMID: 6008199

Copyright

Rockefeller University Press - Copyright Policy This article is distributed under the terms of an Attribution–Noncommercial–Share Alike–No Mirror Sites license for the first six months after the publication date (see http://www.jcb.org/misc/terms.shtml). After six months it is available under a Creative Commons License (Attribution–Noncommercial–Share Alike 4.0 Unported license, as described at https://creativecommons.org/licenses/by-nc-sa/4.0/ ). (More? Help:Copyright Tutorial)

Image has been scaled, rotated and contrast adjusted.