Match the following terms and definitions.
1.
protein shell of a virus that surrounds its nucleic acid
immunization
2.
resistance to disease or poison
variolation
3.
vaccination; artificially stimulating antibodies to a disease
capsid
4.
the act or practice of introducing a vaccine into the body as protection against disease
vaccination
5.
a remedial technique of purposeful infection in order to build immunity to the disease
virus
6.
a pathogenic microorganism dependent on living tissue for reproduction and growth
immunity