Biol Reprod 2009 SSR Annual Meeting Abstracts
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Biology of Reproduction, Vol 6, 168-175, Copyright © 1972 by Society for the Study of Reproduction

Exchange of Cytoplasm Between Cells of the Membrana Granulosa in Rabbit Ovarian Follicles

LAWRENCE L. ESPEY 1, and ROBERT H. STUTTS 1

1 Biology Department, Trinity University San Antonio, Texas 78212


The cells of the membrana granulosa contain numerous spherical inclusions which appear in any portion of their cytoplasmic matrix. These structures are bounded by a 20 nm double membrane, and their diameter ranges from about 0.3-3.0 µm. They form when a cytoplasmic process from one granulosa cell is completely incorporated into an adjoining cell. This transfer of cytoplasm occurs only at zonulae occludentes which develop between adjoining cells. The inside of the spherical structures inconsistently contain either cytoplasmic ground substance, endoplasmic reticulum, lipid droplets, or mitochondria. The role these structures have in follicular activity is not clear.

Submitted on September 17, 1970






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Copyright © 1972 by the Society for the Study of Reproduction.