[Objective] To investigate the potential factors which related to the induction of embryo damage in living and working environment,especially the relationship between occupational stress and embryo damage.

Objective To investigate the hemodynamic changes of the pregnancy failure by Doppler ultrasound.

Role of low estrogen in follicle/oocyte maturation and embryo development;

In vitro fertilization and subsequent embryo development using oocytes derived from abattoir ovaries or collected by transvaginal follicle aspiration in water buffalo;

Cloning and expression of nanos, a gene related to germ stem cell and its expression pattern in embryo development in silkworm;