Question

What is the first step in producing a vaccine against infectious diseases?

inactivating the disease agent
testing for vaccine side effects

finding and isolating the disease agent

isolating antigens

Answer 1

Answer:

a substance used to stimulate the production of antibodies and provide immunity against one or several diseases, prepared from the causative agent of a disease, its products, or a synthetic substitute, treated to act as an antigen without inducing the disease.

Explanation:

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