| TO | old tuberculin; oral temperature; original tuberculin; target organ; telephone order; thoracic ortho... |
|---|---|
| TZ | zymoplastic tuberculin [the dried residue which is soluble in alcohol] [Ger. Tuberculin zymoplastisc... |
| PPD-S | purified protein derivative-standard |
| OT | Old Tuberculin |
| PPDs | (Tuberculin) Purified Protein Derivatives |