[The clinical picture of legionnaires' disease].

The results of the clinico-laboratory study of 12 cases of acute pneumonia of Legionella etiology are presented. The laboratory diagnosis of Legionella infection was carried out by the study of paired sera in the passive hemagglutination test with the use of Legionella pneumophila (serotype 1) erythrocyte diagnosticum. The clinical picture of pneumonia was characterized by a severe and moderate course of the disease.

[Use of various immunological methods for the detection of specific antigen in leukocytes of leukemic patients].

A specific antigen was found in white blood cells of patients with leukemia by means of the indirect immunofluorescence and ring precipitation tests. Using a mixture of hyperimmune rabbit sera with leukocytes from patients with various forms of leukemia (lympholeukemia, myeloleukemia, hemocytoblastosis and reticulosis), it can be found in cells of patients with some forms of this disease. An increased amount of the antigen in the cells was found in cases of myeloleukemia or hemocytoblastosis.