A Vaccine Administered in the Autumn of One Year May

Multiple Choice

A vaccine administered in the autumn of one year may protect against the prevalent strain of influenza virus that originated in Hong Kong that same year,but it will not protect against another strain of influenza virus that originated in Russia.This phenomenon illustrates which property of the adaptive immune system?

A) Specificity
B) Amnesia
C) Specialization
D) Cultural diversity
E) Self-tolerance