Abstract

ABSTRACT The cervical mucus was studied with regard to changes in sialic acid content and sperm receptivity. The data were correlated with the urinary total oestrogen excretion in anovulatory women treated with human pituitary gonadotrophins (HPG). With increasing total oestrogen excretion the sialic acid content decreased and the sperm receptivity increased. At a total oestrogen level of about 60 μg/24 h the respective patterns of the curves were reversed and higher values for total oestrogen were actually associated with a decrease in sperm receptivity and an increase in sialic acid content. The possible significance of these observations is discussed.

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