There was Old Tuberculin in the syringe when Cole arrested him.

There is also what is termed Old Tuberculin which is harmless to a healthy person but which stimulates any old tubercular lesion into activity.

This test uses a small "button" that has four to six short needles coated with TB antigens (tuberculin), either an old tuberculin or a PPD-tuberculin.

He decided to move to Holland and accepted a post as prosector in the small Catholic Ziekenhuis hospital in The Hague and, in order to improve his financial situation also took a job in a small factory, producing old tuberculin (tuberculinum prestinum).