Study on changes of productive hormones of Small Meishan pig during estrous cycle;

Observation on histological structure of corpus luteumin in the yak during estrous cycle;

Histological observations of follicular development in ovaries of yaks during estrous cycle;

Research of Rabbit s uterus tissue texture of different periods of oestrus cycle;

The secretory characteristics of GTH and sexual hormone of Jining gray goat during the oestrus cycle;

To study on the validity of vaginal cytology to determine oestrus cycle,seven bitches ovariohysterectomized 45 days before were treated with intermuscular injection of estradiol benzoate and progesterone to simulate the patterns of estrogen and progesterone in bitches\' oestrus cycle.

Expression of preproorexin and OX1 R m RNA in the hypothalamo-pituitary-ovary axis of Suzhong sows in the oestrous cycle;

In cattle and pig,there existed LH receptor(LHR) protein and its mRNA in the uterus throughout the oestrous cycle,and the maximum expression occurred at luteal phase.

However,the change of all reproductive hormone is very complex in oestrous cycle.

Vaginal smear method was usedin order to ascertainthe characters of each stage of estrus cycleinrat.

During estrus cycle, concentration of estradiol 17β and progesterone were measured in peripheral blood and cytoplasmic estrogen receptor(CER), nuclear estrogen receptor(NER), cytoplasmatic progesterone receptor(CPR) and nuclear progesterone receptor(NPR) were quantitated in uterus of Fengjing swine, that were paralleled with Landrace swine.