[Associations of the soil amoeba Hartmannella rhysodes with the bacterial causative agents of plague and pseudotuberculosis in an experiment].

Some aspects of relationships between soil ameba and the causative agents of plague and pseudotuberculosis, capable of forming natural associations, are considered. Ameba can phagocytose bacteria causing plague and pseudotuberculosis. Cases of the preservation of individual bacterial cells at the stationary phase and in precysts of amebae have been registered.

[Reversibility of the development of malignant lymphoma with 7-years of leukemization, associated with the development of chronic myeloleukemia].

A case of typical Ph-positive chronic myelogenous leukemia developed in a 58-year old female with a 7-year history of chronic lymphoproliferative disease is described. With the second disease progression, the features of lymphoid proliferation disappeared almost completely. Possible causes of this rare combination of two diseases are discussed.

[Malignant lymphoma with "hairy" lymphocytes in the blood and splenomegaly--a new variant of lymphoproliferative diseases].

A total of 5 patients with a clinicohematological picture resembling hairy-cell leukemia (HCL) have been described. However, the morphological features of leukemic lymphocytes, the absence of acid phosphatase in them, the nodular character of the bone marrow lesion combined with an unusual phenotype have permitted the authors to distinguish these cases as a separate variant of B-cell malignant lymphoma. Paraprotein (M-class) was detected in the blood of two of the patients.