Homo sapiens zone of organ transition zone of prostate https://ccf-ontology.hubmapconsortium.org/objects/v1.2/VH_M_Prostate.glb UBERON:8410025 The region of the prostate gland anterior to the central and peripheral zones, surrounding the proximal urethra. It is the zone of the human prostate gland that grows the most throughout life, and is responsible for benign prostatic hypertrophy. uberon prostate transition zone transition zone of human prostate