Analysis of PLAC1 expression in normal placenta and testis. (A) Immunohistochemical staining of term placental section showing positive staining in syncytiotrophoblast and cytotrophoblast. (B) Immunohistochemical staining of normal testis. Antibody staining was evident on the luminal face of the seminiferous tubules, with the majority of staining appearing to be extracellular. Immunohistochemical staining is in brown, while hematoxylin counterstaining is blue. Original magnification 400x.