Blood-testis barrier is formed by -: (A) Sertoli cells, (B) Leydig cells, (C) Epididymis, (D) Vas deferens
Answer is A. Ans. is 'a' i.e., Sertoli cells o Blood brain barrier - Tight junction between endothelial cells and some reinforcement by foot process of astrocytes.o Blood CSF barrier -Tight juction between endothelial cells plus tight junction between choroidal epithelial cells.o Blood testis barrier - Tight junction betw-een endothelial cells plus sertoli cells.