Vaccine | Definition, Types, History, & Facts | Britannica
https://www.britannica.com/science/vaccine
WEBApr 14, 2024 · Vaccine, suspension of weakened or killed microorganisms or toxins or other biological preparation, such as those consisting of antibodies, lymphocytes, or mRNA, that is administered to prevent disease. Vaccines work by stimulating the immune system to attack specific harmful agents.
DA: 50 PA: 70 MOZ Rank: 92