The distribution of euchrysine-binding grains of the peripheral and bone marrow stem cells in different types of acute leukemia.

The distribution of the fluorescent euchrysine-binding grains in the peripheral and bonmarrow stem cells was estimated in 28 cases of different types of acute leukemia verified according to Lòffler's cytochemical classification. The relationship between the pattern of fluorescent euchrysine-binding grains of human stem cells and the cytochemical type of acute leukemias has been established. Consequently, the authors suggest that the euchrysine-binding grains pattern of human stem cells may have a diagnostic value in distinguishing between various types of acute leukemia.

Lysozyme in the serum, urine and peripheral blood leukocytes in patients with immunocytoma.

Lysozyme activity was determined in the serum, urine and leukocytes of 53 patients with immunocytoma and 24 patients with lymphoproliferative syndromes without associated monoclonal gammapathy. In patients with multiple myeloma the frequency of low serum lysozyme activity and high leukocyte lysozyme activity was higher. In the cases with renal failure, lysozyme activity was raised in serum and urine, and the 24-hour urinary lysozyme excretion was increased.

Diagnostic value of lysozyme activity estimation in the feces of infants with acute diarrhoea.

The activity of lysozyme in feces was estimated in a control group of 50 healthy infants and in a group of 152 infants with acute diarrhoea. All infants investigated were artificially nourished. In the latter group the activity of lysozyme was estimated twice: a) at the beginning of clinically active phase of the disease and (b) in the convalescence period immediately after withdrawal of clinical symptoms.