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Fig. 29. The Second Polar Body

The second polar body (PB2) has a spheroidal nucleus consisting of dense chromatin aggregates and a highly hydrated nucleoplasm. A double nuclear membrane is present. The lamellar structures (*) embedded in the chromatin clumps may represent either nuclear annulate lamellae or the chromosomal axial complex. The lamella toward the left of the micrograph is shown at higher magnification in the insert. Note the regressive changes of the mitochondria. fig. 99, X 15,000. Inset, X 114,000.


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Reference

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


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