label: urethral fold
label_lc: urethral fold
description: "The urethral fold (TS:20-TS:27) is the mesenchyme adjacent to the epithelium of phallic urethra that is thought to fuse during internalization of the urethra in males, however whether or not this mesenchyme fuses is unclear. Present in both males and females from E12.5 (Suzuki et al., 2002). Part of the genital tubercle."