| Health / Medical Topics |
Attenuated Live Virus Vaccine
Live vaccines prepared from microorganisms which have undergone physical adaptation (e.g., by radiation or temperature conditioning) or serial passage in laboratory animal hosts or infected tissue/cell cultures, in order to produce avirulent mutant strains capable of inducing protective immunity. Live-attenuated vaccines are used when a CD8+ T Cell (cellular cytotoxicity) response is desired. (NCI Thesaurus)
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