Fifty Percent Inhibitory Concentration

**Semantic type:** Quantitative Concept

**Definition:** The concentration of the inhibitory molecule that results in a 50% or greater reduction in infectivity, biological or biochemical function. This should be reported as mass or arbitrary unit per volume.

**Synonyms:** - 50% INHIBITORY CONCENTRATION - 50% Inhibitory Concentration - 50% Inhibitory Concentration - Half-maximal Inhibitory Concentration - IC50