Blood-testis barrier is formed by -
1.Sertoli cells
2.Leydig cells
3.Epididymis
4.Vas deferens
exp:
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.