method of immunization造句

Later, he injected Phipps with variolous material, the routine method of immunization at that time.
New vaccines are being researched using outer surface protein C ( OspC ) and glycolipoprotein as methods of immunization.
Baumgartner was also an early advocate of the vaccine developed by Jonas Salk as a method of immunization against polio and the fluoridation of water as a bulwark against dental disease.
He went on to develop an antitoxin against diphtheria in animals and then in humans, which resulted in the modern methods of immunization and largely ended diphtheria as a threatening disease.
It's difficult to find method of immunization in a sentence. 用method of immunization造句挺难的