| IK | immobilized knee; immune body [Ger. Immunekorper]; Infusoria killing [unit]; interstitial keratitis |
|---|---|
| nem | nutritional milk unit [Ger. Nahrungs Einheit Milch] |
| NK | Commission on [Anatomical] Nomenclature [Ger. Nomenklatur Kommission]; natural killer [cell]; neurok... |
| PBE | tuberculin from Mycobacterium tuberculosis bovis [Ger. Perlsucht Bacillen-emulsion] |
| PTO | Klemperer's tuberculin [Ger. Perlsucht Tuberculin Original] |