Abstract
Summary
1. Suspensions of human white blood cells in homologous fresh plasma will adsorb tuberculin (O.T.) from the plasma.
2. White blood cells from normal persons with a negative intracutaneous reaction to tuberculin as well as white cells from persons with active tuberculosis show this phenomenon.
3. Suspensions of mouse white blood cells in homologous fresh plasma will not adsorb tuberculin from the plasma.
4. There is no difference in the lack of tuberculin adsorption by white blood cells from normal or tuberculous mice.
5. Normal human plasma does not whereas plasma from patients with active tuberculosis does partially inactivate tuberculin under the conditions of thee experiments.
6. Tuberculin has been assayed by its in vitro cytotoxic effect on white blood cells. from tuberculous subjects.
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