Million Plaque Forming Units

**Semantic type:** Quantitative Concept

**Definition:** A measure of viable infectious entities expressed in millions in the specimen or product defined as the smallest quantity that can produce a cytopathic effect in the host cell culture challenged with the defined inoculum, visible under the microscope or/and to the naked eye as a plaque.

**Synonyms:** - 10*6{PFU} - 10*6{PFU} - 10E6 PFU - 10^6 PFU - 10^6 PFU - 10^6 Plaque Forming Units - 10^6{PFU} - 10^6{PFU} - One Million PFU - One Million Plaque Forming Units