In the uterine fluid of infertile women the amylase activity is singif
icantly lower (90.00 to 357.75 mg/hr/100 ml) than that in parous women
(172.14 to 536.99 /hr/100 ml) during the different phases of menstrua
l cycle. Possibly the low enzyme activity in infertile women can impai
r the sperm capacitation and thus adversely affect the fertility of th
ese infertile women.