The cyclical changes in the physical properties of the cervical mucus and the results of the postcoital test.
D002582:Cervix Mucus / Q000166:cytology; D003075:Coitus; D005260:Female; D006801:Humans; D007247:Infertility, Female; D007962:Leukocytes / Q000166:cytology; D008297:Male; D013094:Spermatozoa; D014783:Viscosity