Edward Jenner's Work Involved

Multiple Choice

Edward Jenner's work involved

A) inoculation of dried pus from cowpox pustules into a person to stimulate immunity.
B) development of artificial acquired immunity methods.
C) development of an immunization to protect people against cowpox.
D) immunization using a related,less pathogenic organism to give protection against a more pathogenic one.
E) All of the choices are correct.