Segmental Hypoplasia.

Segmental Hypoplasia.
The base of the right horn is missing. Uterine secretion have accumulated in the isolated portion of the horn. When such animal ovulates from the ovary ipsilateral to the incomplete horn, the corpus luteum persists due to lack of a lutelolytic prostaglandin signal from the defective horn. These animals can conceive on the intact size. This tract came from a prepuberal heifer.

Drost M (1970)