We are pleasured to inform you that there is a new paper that describes in detail the anatomy of the cetacean prostate from the Institute of Animal Health in Las Palmas de Gran Canaria (Spain). You can check it in the following link: (https://www.ncbi.nlm.nih.gov/pubmed/31587464)

Comparative morphology, histology, and cytology of odontocete cetaceans prostates.
Suárez-Santana CM, Fernández A, Sierra E, Arbelo M, Bernaldo de Quirós Y, Andrada M, Mompeo B, Pérez L, Blanco A, Méndez A, Espinosa de Los Monteros A, Rivero MA.

The prostate is the only male accessory gland in cetaceans. However, little is known about this organ in
these species. Anatomical and histological characteristics of the prostate have been described in only a few
cetacean species, further, one study reported a high incidence of prostatic pathologies in cetaceans that may
impair reproduction. The objective of this work was to describe and compare the morphological, histological,
and cytological characteristics of the prostate in different odontocete cetaceans. To this end, the prostate
glands of 47 animals from nine different species of cetaceans were macroscopically and microscopically
studied. Members of the families Delphinidae, Ziphiidae, and Physeteridae were included. In general, the
prostate appeared as a musculo-glandular organ with two distinct parts—the Corpus prostatae and the
Pars disseminata prostatae. In the pygmy sperm whale (Kogia breviceps) and the Cuvier's beaked whale
(Ziphius cavirostris), the prostate was a discrete gland with a small Corpus prostatae. Microscopically,
the prostates of different delphinids species shared similarities; however, the prostate of the pygmy sperm
whale revealed significant histological differences compared to those of the delphinids. Immunohistochemical
analysis was performed using low- and high-molecular-weight cytokeratin, vimentin, and prostatic specific
antigen commercial antibodies. Electron microscopy analysis was performed on the prostate of a bottlenose
dolphin and the cytomorphological differences among the major epithelial components of the prostatic
epithelium were described.