AZD2281
Azedra
AZD6244
Azoospermia
AZQ
Azygos vein
Azoxymethane
AZT
AC-T regimen
Acolbifene hydrochloride
AC-Taxol regimen
Acneiform rash
Acid-base equilibrium
Acid-base balance
Acid
Acquired thrombotic thrombocytopenic purpura
Acridine carboxamide
Acromegaly
AC-T
Acrylonitrile 

Attenuated

Meaning of Attenuated

Weakened or thinned. Attenuated strains of disease-causing bacteria and viruses are often used as vaccines. The weakened strains are used as vaccines because they stimulate a protective immune response while causing no disease or only mild disease in the person receiving the vaccine.

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