Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Possible mechanisms of polyorchidism. (A) Genital ridge duplication gives rise to two testes with their respective epididymides. (B) Longitudinal division of the genital ridge. The testis derived from the medial region has no epididymis. (C) Transverse division of the genital ridge. The resulting testes either share a single epididymis or one testis is devoid of epididymis.
