a prerequisite for the development of such methods is a greatly improved knowledge of the physiological factors influencing the various steps of the reproductive processes in the human species.in an attempt to focus attention on the various steps which are susceptible to controlled interference , a brief review is given of some of the present concepts of the regulation of spermiogenesis , ovulation and the menstrual cycle , sperm capacitation , fertilization , tubal passage , zygote and blastocyst formation , implantation and early embryonic development .
C0035150
reproductive
C0025329
menstrual cycle