Introduction And Natural Immunity

Question 1

can be defined as the study of a host’s reac- tions when foreign substances are introduced into the body.

Answer 1

Immunology

Question 2

A foreign substance that induces such an immune response is called an

Answer 2

antigen

Question 3

the condition of being resistant to infection

Answer 3

immunity

Question 4

The practice of deliberately exposing an individual to material from smallpox lesions was known as

Answer 4

variolation

Question 5

discovered a remarkable relationship between expo- sure to cowpox and immunity to smallpox. After observing the fact that milkmaids who were exposed to cowpox had apparent immunity to smallpox, he deliberately injected individuals with material from a cowpox lesion and then exposed them to smallpox. He thus proved that immunity to cowpox, a very mild disease, provided protection against smallpox.

Answer 5

Edward Jenner