T. Clark Brelje, Ph.D.
University of Minnesota
Department of Genetics, Cell Biology and Development
6-160 Jackson Hall
321 Church St SE
Minneapolis, MN 55455
Robert L. Sorenson, Ph.D.
University of Minnesota
Department of Genetics, Cell Biology and Development
6-160 Jackson Hall
321 Church St SE
Minneapolis, MN 55455
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During each ovarian cycle several oocytes will start to undergo a process that leads to ovulation of a single oocyte. This process involves the formation of secondary (antral) follicles (SEM).
Oocyte (yellow) - large cell that undergoes meiotic divisum to form an ovum
Corona Radiata (purple) - granulosa cells that suround the oocyte
Cumulus Oophorus (cyan() - granulosa cells that project into the antrum and support the oocyte
Antrum - single chamber filled with follicular fluid
Granulosa Cells (blue) - several layers surround the follicular antrum and oocyte
Basal lamina separates the outer layer of granulosa cells from the theca interna
Theca Interna (tan) - layer of connective tissue that surrounds the granulosa cells (damaged in this specimen)