Ten Million Plaque Forming Units

**Semantic type:** Quantitative Concept

**Definition:** A measure of viable infectious entities expressed in tens of 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*7{PFU} - 10*7{PFU} - 10E7 PFU - 10^7 PFU - 10^7 PFU - 10^7{PFU} - 10^7{PFU} - 10^7{pfu} - 10^7{pfu} - Ten Million PFU