Edward Jenner observed that milkmaids exposed to cowpox were immune to smallpox. What biological process did he trigger by inoculating a boy with cowpox material?
Q1. Edward Jenner observed that milkmaids exposed to cowpox were immune to smallpox. What biological process did he trigger by inoculating a boy with cowpox material?
Answer: Active immunity
Explanation: Vaccination provides active immunity by stimulating the body's own immune response. Passive immunity involves giving pre-formed antibodies, which Jenner did not do.