Which of the following approaches does not give
the defined action of contraceptive ?
(1) Barrier prevent fertilization
methods
(2) Intra uterine Increase phagocytosis of
devices sperms, suppress sperm
motility and fertilizing
capacity of sperms
(3) Hormonal Prevent/retard entry of
contraceptives sperms, prevent ovulation
and fertilization
(4) Vasectomy Prevents spermatogenesis