File:Human pronuclear stage EM12.jpg
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Human Pronuclear Stage - Crystalline inclusions
- Crystalline inclusions such as those shown in these micrographs are present in limited numbers throughout the cytoplasm of the penetrated ovum.
- They are thought to represent ooplasmic yolk.
- When observed in cross-section (Fig. 12), the inclusions appear to be composed of 10 to 25 parallel, faintly striated rods.
- In an oblique or tangential plane (Fig. 18), the rods form hexagonal crystalline arrays.
- Note the pointed profile of one of these inclusions in the lower left corner of the micrograph.
- 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 | Fertilization | Carnegie stage 1
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