File:Human pronuclear stage EM06.jpg

Human Pronuclear Stage - Mitochondria

• Region of the ooplasm of the penetrated ovum with typical complement of organelles.
• The mitochondria are numerous and mostly spheroidal.
• Two mitochondria with archlike arrangement of the inner cristae are indicated by the single arrows.
• The ER is present in the form of large (V) and small vesicles (v).
• The large vesicles are usually associated with mitochondria.
• The small vesicles are thought to originate by budding from the large ER vesicles (see Figs. 6 to 8).
• The double arrow indicates a large vesicle with a few ribosomes attached to its limiting membrane, g, Golgi complex.

X 29,000.

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

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