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Ovary: primary multilaminar follicle

A primary multilaminar follicle is formed when follicular cells, now termed granulosa cells, increase in volume and number, forming a stratified epithelial layer. Zona pellucida, a highly refractile, glycoproteinaceous layer, is prominent around the oocyte at this stage. Stromal cells surrounding the follicle differentiate into the theca (theca folliculi). 400x

Primary oocyte <p>A primary multilaminar follicle is formed when follicular cells, now termed granulosa cells, increase in volume and number, forming a stratified epithelial layer. Zona pellucida, a highly refractile, glycoproteinaceous layer, is prominent around the oocyte at this stage. Stromal cells surrounding the follicle differentiate into the theca (theca folliculi). 400x</p>

Primary oocyte

A primary multilaminar follicle is formed when follicular cells, now termed granulosa cells, increase in volume and number, forming a stratified epithelial layer. Zona pellucida, a highly refractile, glycoproteinaceous layer, is prominent around the oocyte at this stage. Stromal cells surrounding the follicle differentiate into the theca (theca folliculi). 400x
Zona pellucida <p>A primary multilaminar follicle is formed when follicular cells, now termed granulosa cells, increase in volume and number, forming a stratified epithelial layer. Zona pellucida, a highly refractile, glycoproteinaceous layer, is prominent around the oocyte at this stage. Stromal cells surrounding the follicle differentiate into the theca (theca folliculi). 400x</p>

Zona pellucida

A primary multilaminar follicle is formed when follicular cells, now termed granulosa cells, increase in volume and number, forming a stratified epithelial layer. Zona pellucida, a highly refractile, glycoproteinaceous layer, is prominent around the oocyte at this stage. Stromal cells surrounding the follicle differentiate into the theca (theca folliculi). 400x
Granulosa cells <p>A primary multilaminar follicle is formed when follicular cells, now termed granulosa cells, increase in volume and number, forming a stratified epithelial layer. Zona pellucida, a highly refractile, glycoproteinaceous layer, is prominent around the oocyte at this stage. Stromal cells surrounding the follicle differentiate into the theca (theca folliculi). 400x</p>

Granulosa cells

A primary multilaminar follicle is formed when follicular cells, now termed granulosa cells, increase in volume and number, forming a stratified epithelial layer. Zona pellucida, a highly refractile, glycoproteinaceous layer, is prominent around the oocyte at this stage. Stromal cells surrounding the follicle differentiate into the theca (theca folliculi). 400x
Basement membrane <p>A primary multilaminar follicle is formed when follicular cells, now termed granulosa cells, increase in volume and number, forming a stratified epithelial layer. Zona pellucida, a highly refractile, glycoproteinaceous layer, is prominent around the oocyte at this stage. Stromal cells surrounding the follicle differentiate into the theca (theca folliculi). 400x</p>

Basement membrane

A primary multilaminar follicle is formed when follicular cells, now termed granulosa cells, increase in volume and number, forming a stratified epithelial layer. Zona pellucida, a highly refractile, glycoproteinaceous layer, is prominent around the oocyte at this stage. Stromal cells surrounding the follicle differentiate into the theca (theca folliculi). 400x
Theca folliculi <p>A primary multilaminar follicle is formed when follicular cells, now termed granulosa cells, increase in volume and number, forming a stratified epithelial layer. Zona pellucida, a highly refractile, glycoproteinaceous layer, is prominent around the oocyte at this stage. Stromal cells surrounding the follicle differentiate into the theca (theca folliculi). 400x</p>

Theca folliculi

A primary multilaminar follicle is formed when follicular cells, now termed granulosa cells, increase in volume and number, forming a stratified epithelial layer. Zona pellucida, a highly refractile, glycoproteinaceous layer, is prominent around the oocyte at this stage. Stromal cells surrounding the follicle differentiate into the theca (theca folliculi). 400x
Main SlidePrimary oocyteZona pellucidaGranulosa cellsBasement membraneTheca folliculi