| PPDs | (Tuberculin) Purified Protein Derivatives |
|---|---|
| TU | Tuberculin Unit |
| BF | bentonite flocculation; bile flow; black female; blastogenic factor; blister fluid; blood flow; body... |
| bf | black female; bouillon filtrate [tuberculin] |
| PBE | tuberculin from Mycobacterium tuberculosis bovis [Ger. Perlsucht Bacillen-emulsion] |