The studies in the present work are a continuation of the previous studies of the author's on the functional activity of leukosis cells and discuss their fungicidal activity versus Candida albicans. Blast cells from 22 patients with various clinical-morphological forms of acute leukosis were studied. It has been concluded from the results obtained that leukosis cells of monoblast type in acute myelomonoblast (M4) and monoblast (M5) leukosis are able to lyse Candida albicans, the value of their fungicidal activity being lower than that of mature monocytes from peripheral blood of healthy subjects. The fungicidal activity is observed in leukosis cells from patients with promyelocyte (M3) leukosis. The authors propose the fungicidal activity of leukosis cells to be used as an additional, functional criterium in the differentiation of their type.
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