11. Another interesting line of research is that which examines women's mate preferences across the ovulatory cycle. 12. The second signal is released during the ovulatory phase of the estrous cycle and it lengthens estrous cycles. 13. As a result, they need to mate with a high number of males during each ovulatory period. 14. This means two eggs will be released during ovulation ( double ovulation, one per ovulatory follicle ). 15. Primary dysmenorrhea usually begins within a year or two of menarche, typically with the onset of ovulatory cycles. 16. Absence of mastodynia ( breast pain or tenderness ) occurs in about 20 % of women with ovulatory problems. 17. The pygmy marmoset has other ways to communicate information about matters such as the female's ovulatory state. 18. Similarly, in each menstrual cycle, the ovarian surface epithelium undergoes EMT during post-ovulatory wound healing. 19. Sarafem, a drug taken for a premenstrual disorder, is not Serophene, used by women with ovulatory failure. 20. The other 50 per cent experience a post-ovulatory phase of 10 to 12 or 15 to 16 days.
