“…The results confirmed the following: (1) the number of contralateral follicle-CL relationships is greater than that for ipsilateral relationships in wave 3, (2) the number of waves per IOI is measurably repeatable, (3) increases in LH and estradiol during the ovulatory wave are related to the differences in the beginning of luteolysis among permutations rather than to increased frequency of the contralateral-wave 3 permutation, and (4) FSH surge 3 is temporally associated with the extended luteal phase in three-wave IOIs. The study also revealed the following: (1) the side of ovulation (left or right ovary) was not related to the number of waves per IOI or to the follicle-CL relationship, (2) the beginning of luteolysis (mean day of the beginning of a progressive progesterone decrease) in three-wave IOIs began 2 days later for the contralateral than for the ipsilateral relationships, and (3) a minor FSH surge occurred more frequently in the contralateral than in the ipsilateral relationship in wave 3 but may have reflected the longer interval from wave emergence to ovulation [13]. In regard to point 3, a positive effect of FSH on progesterone has not been demonstrated in vivo, but the bovine CL contains FSH receptors (review [13]).…”