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The mammary gland is a compound tubuloalveolar gland. The secretory parenchyma is divided into lobes and then lobules by connective

The epithelium of the oviduct mucosa contains two major cell types, ciliated and secretory. The ciliated cells are columnar in

This low power micrograph shows part of a corpus luteum. The atrium and the fluid inside has disappeared as the

This is a low power micrograph of an ovary which contains a recently formed corpus luteum. The Graafian follicle, prior

In this low power picture of the ovary (8x) you can see the relative sizes of two mature secondary follicles

In the antrum of this secondary follicle the follicular liquor formed a precipitate and stained eosinophilic. The oocyte has reached

The antrum of this secondary follicle is quite large. Some of the proteins in the follicular liquor stained light pink.

As the secondary follicle grows under the influence of FSH and increases in size, fluid (follicular liquor) accumulates between the

As the secondary follicle grows under the influence of FSH and increases in size, fluid (follicular liquor) accumulates between the

As the follicle develops, the oocyte becomes larger. The follicular cells proliferate and the oocyte is surrounded by stratified polyhedral

The primary follicle contains an oocyte surrounded by a single layer of cuboidal epithelial cells which sit on a basal

Beneath the surface epithelium of the ovary is a thick layer of dense connective tissue, the tunica albuginea. The primordial

This is a low power micrograph of the surface of a feline ovary. The ovary is divided into a cortex