1 The suitable therapy is gonadotropic agents or two step compound therapy.

2 Low dosage gonadotropic hormone was applied to induce of double calving on this paper and the factor of success was analyzed.

3 The damage of gonadotropic cells in the pituitary gland was important morphologic basis of changes in sexual function after ischemia.

4 The suitable therapy is gonadotropic agents of two-step compound therapy.

5 Objective To assess the effect of repeated gonadotropic stimulations on the developmental potential and growth differentiation factor-9 (GDF-9) expression of mouse oocytes.

6 According to modern research, velvet antler has shown gonadotropic activity.

7 Human chorionic gonadotropic (hCG) and human placental latogen (hPL) are peptide hormones produced and excreted by placental trophoblastic cells during pregnancy.

8 Objective To found efficient procedure of inducing estrus in the bitch using exogenous gonadotropic hormones.