Question

Define vaccine. In biology​

Answer 1

Explanation:

biological agents that elicit an immune response to a specific antigen derived from an infectious disease-causing pathogen.

Edward Jenner developed the first vaccine in 1796 using cowpox to inoculate against smallpox.

Answer 2

Answer:

Vaccine: A product that stimulates a person's immune system to produce immunity to a specific disease, protecting the person from that disease. Vaccines are usually administered through needle injections, but can also be administered by mouth or sprayed into the nose.

Explanation:

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