Fluorescent Assay Infectious Dose 50 Percent per Dose

**Semantic type:** Quantitative Concept

**Definition:** A unit of potency expressed as a number of 50 percent infectious doses as defined in the particular fluorescent assay method per dose of preparation.

**Synonyms:** - FAI50/dose - Fluorescent Assay Infectious Dose 50% per Dose - fluorescent assay infectious dose 50%/dose