| PHF | paired helical filament; personal hygiene facility |
|---|---|
| PI | first meiotic prophase; isoelectric point; pacing impulse; package insert; pancreatic insufficiency;... |
| POI | Personal Orientation Inventory |
| PPMS | Performax's Personal Matrix System |
| PPS | Personal Preference Scale; physician, patient and society [course]; polyvalent pneumococcal polysacc... |
| SICRI | substance immunologically cross reactive with insulin |
|---|---|
| SAS | surface active substance |