active passive immunization的用法和样例：
- Active and passive immunization of animal's inhibin increased FSH levels in serum and enhanced ovulation rate.
- Although passive immunization now seems to hold the most promise, active immunization is not out of the running.
- active passive immunity
- A passive immunization treatment developed by Elan Corporation has already advanced to phase II clinical trials.
- The advantages of passive immunization against inhibin of ewes were economic, security and good effect.