50 Percent Embryo Infective Dose per Milliliter

**Semantic type:** Quantitative Concept

**Definition:** A potency unit for measuring infectious activity of a biologic product or an infectious agent preparation equal to the potency at which one milliliter of infectious material contains one 50 percent embryo infective dose.

**Synonyms:** - EID 50/mL - [EID_50]/mL - [EID_50]/mL - [EID_50]/ml - [EID_50]/ml