| PIDS | primary immunodeficiency syn-drome |
|---|---|
| PII | plasma inorganic iodine; primary irritation index |
| PIS | preinfarction syndrome; primary immunodeficiency syndrome; Provisional International Standard |
| PLC | phospholipase C; primary liver cancer; proinsulin-like component; protein-lipid complex; pseudolymph... |
| PLCC | primary liver cell cancer |