|Description:||The primary follicle contains an oocyte surrounded by a single layer of
cuboidal epithelial cells which sit on a basal lamina. This is a
primary oocyte in arrested prophase of the first meiotic division. The
nucleus is large and has a prominent nucleolus. Also seen in this
micrograph are a number of primordial follicles. Each one of these
contain an oocyte surrounded by a flattened layer of follicular cells.
The oocytes are also primary oocytes. Compare the sizes between the
primordial and primary follicles and you will see that the oocyte in
the primary follicle has increased in size considerably. The stromal
cells are small and spindle-shaped. A few chubby cells seen in the
stroma are interstitial endocrine cells. PK1457. Original mag. 100x
H&E Primary follicle and primordial follicles. Cortex. Ovary.
Female Reproductive System. Cat.|