| PI | first meiotic prophase; isoelectric point; pacing impulse; package insert; pancreatic insufficiency;... |
|---|---|
| PIV | parainfluenza virus; polydactyly-imperforate anus-vertebral anomalies [syndrome]; projective image v... |
| ICNV | International Committee on Nomenclature of Viruses |
| ICTV | International Committee for the Taxonomy of Viruses |
| PCNV | postchemotherapy nausea and vomiting; Provisional Committee on Nomenclature of Viruses |