요약 I. Introduction II. Materials and Methods 1. Preparation of oocytes and sperm 2. In vitro fertilization and confirmation 3. Culture and transfer oh embryos fertilized in vitro 4. Statistical analysis III. Results and Discussion 1. In vitro fertilization rates 2. Cleavage rates of In vitro fertilized ova by PMSG dose and culture vessel 3. Transfer resules of In vitro fertilized ova IV. Summary V. Reference