<prompt> The cell which forms blood-testis barrier isSpermatogoniaPrimary spermatocyteLeydig cellSeoli cell  <response>: The blood-testis barrier is a physical barrier between the blood vessels and the seminiferous tubules of the testes.The name blood-testis barrier is misleading in that it is not a blood-organ barrier in a strict sense, but is formed between Seoli cells of the seminiferous tubule and as such isolates the fuher developed stages of germ cells from the blood. 