Nature of the Plasma Factor Responsible for In vitro Lysis of Leucocytes by Tuberculoprotein. ∗

Abstract

Summary

There is present in the plasma of tuberculous humans a heat-labile, non-dialyzable component which is responsible for the in vitro lysis of washed leucocytes by tuberculoprotein. Further properties of this lytic producing substance are its stability at 10°C for at least 7 days and its precipitation with the globulin fraction of the plasma proteins.