Another interesting line of research is that which examines women's mate preferences across the ovulatory cycle.

Indeed, studies have shown that women's preferences vary across the ovulatory cycle.

There is a diurnal as well as an ovulatory cycle in prolactin secretion.

Once you are 25 or into your 30s and 40s, ovulatory cycles are not regular anymore.

Female orangutans experience their first ovulatory cycle around 5.8-11.1 years.

Dr. Edwards had learned how to control the female ovulatory cycle so that one or more egg cells would be ready on command.

The rhythm method depends on calculations of regular ovulatory, menstrual cycles and is especially unreliable at two important times.

The instructions tell couples to time intercourse to coincide with specific stages in the monthly ovulatory cycle.

A female's first ovulatory cycle occurs when she is six years of age, and is followed by a two-year period of adolescent infertility.

The discovery enriched medical knowledge of the 28-day ovulatory menstrual cycle.