Glossary of HIV/AIDS Terms
This glossary contains 1,600 terms and is maintained by the editors of the San Francisco AIDS Foundation's Bulletin of Experimental Treatments for AIDS.
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inhibitory concentration (aka inhibitory dose, aka effective concentration or dose): a measure of drug efficacy. The IC50 (ID50/EC50/ED50) is the median effective dose, or the concentration of a drug that produces 50% suppression of viral replication or eliminates 50% of a population of microorganisms. The IC90 (ID90/EC90/EC50) produces 90% viral suppression or eliminates 90% of microorganisms.