Multiple choice zoology diseases and immunity antibodies antibodies and antitoxin antigen and antibody Variolation consisted of Injecting viriolous matter Injecting heat-killed viriolous matter Scratching an area over a vein and pour small matter from a small pox pustule Scratching vein and pouring viriolous matter into blood Reveal answer Fill a bubble to check yourself C Correct answer Explanation Variolation was an early method of immunization against smallpox where material from a smallpox pustule was introduced into the body, typically through a scratch on the skin.