[Cross microbial antigens of the human bronchopulmonary apparatus].

The work was undertaken to assess the antigenic affinity of some Neisseria perflava, Klebsiella pneumoniae, Staphylococcus aureus strains serving as active sensitinogen of the human broncho-pulmonary apparatus. With the aid of the complement fixation test, precipitation after Ouchterolony, and immunoelectrophoresis there was established the presence of a series of similar antigenic determinants common for all the three microbes and for determinant responsible for the cross reactions of two microbes only.