'A weak form of a disease agent used to protect against the disease, it comes from the Latin word for "cow"'
vaccine
WHAT'S UP, DOC?: A weak form of a disease agent used to protect against the disease, it comes from the Latin word for cow
A weak form of a disease agent used to protect against the disease, it comes from the Latin word for "cow"
A weak form of a disease agent used to protect against the disease, it comes from the Latin word for "cow"
WHAT'S UP, DOC?
vaccine
WHAT'S UP, DOC?