The patterns during the menstrual cycle of serum progesterone, 17-hydroxyprogesterone and 17-ẞ oestradiol were determined in gibbons.The sources of preovulatory peak of 17-hydroxyprogesterone in the proliferative phase was discussed. These steroid levels suggested that ovulation occurred on the day between the oestradiol and progesterone peaks.
Kamonpatana, Maneewan and Tingpalapong, Markpol
"SERUM PROGESTERONE, 17 HYDROXYPROGESTERONE
AND 17-β ESTRADIOL,"
The Thai Journal of Veterinary Medicine: Vol. 7:
3, Article 1.
Available at: https://digital.car.chula.ac.th/tjvm/vol7/iss3/1