The fetal urogenital sinus (from which the prostate derives) is a simple cylinder of stratified basal epithelium, surrounded by mesenchyme and positioned between the embryonic bladder and pelvic urethra [ http://www.ncbi.nlm.nih.gov/pubmed/18977204 ]

Synonyms: epithelium of urogenital sinus UGE

This is just here as a test because I lose it