Morphometric parameters of blood lymphocytes in American mink (Neogale vison) selected for tameness and defensive aggression toward humans.

Although there is some evidence to suggest that there is a link between behavior and immune parameters in animals, this issue is still not well understood. In particular, there is a lack of understanding of how specific behaviors affect the size of immune cells. To address this issue, we investigated the relationship between behavior and the morphometric parameters of lymphocytes in American mink (Neogale vison) that have been selectively bred for aggression and tameness toward humans at the Institute of Cytology and Genetics in Novosibirsk, Russia, for 37 years.

Effect of vitamin C supplementation on some leukocyte parameters in American mink (Neovison vison) with abnormal granulogenesis.

Sapphire mink, a mutant colour variant of American mink, is an animal model of the Chediak-Higashi syndrome (CHS). As in CHS, there are enlarged cytoplasmic granules in various cell types including leukocytes in Sapphire mink due to abnormal granulogenesis. Such cellular abnormality leads to a weakening of the immune defence as a consequence to the development of infections.

[MORPHOLOGICAL FEATURES OF NEUTROPHILS AND EOSINOPHILS GRANULES IN SAPPHIRE MINKS].

It has been established that sapphire minks have abnormality of subcellular structure of blood and bone marrow neutrophils and eosinophils. The abnormality consists in forming of abnormal "giant" granules. The si- ze and the number of abnormal granules significantly change during maturation of leucocytes in bone marrow.

[SPECIFICITY OF CONTENT AND MORPHOLOGY OF PERIPHERAL BLOOD CELLS IN THREE BAT SPECIES OF KARELIA DURING HIBERNATION].

Pronounced leukopenia during hibernation was found in bats (Chiroptera) of Karelia - brown long-eared bat (Plecotus auritus), Brandt's bat (Myotis brandtii) and northern bat (Eptesicus nilssoni). A higher content of lymphocytes, eosinophils and basophils was revealed in the northern bat featuring an increased resistance to cold as compared to the Brandt's bat and the brown long-eared bat. The differences in ratio of particular lymphocyte types may be related to biological, ecological and physiological peculiarities of the species studied.

[Morphological peculiarities of peripheral blood lymphocytes in arctic foxes after administration of various doses of vitamins A and E].

The aim of this work was to study the effect of various doses of vitamins A and E on the morphometric parameters and surface architectonics peculiarities of peripheral blood lymphocytes in veiled Arctic foxes. Using light microscopy, it was found that in the blood of veiled Arctic foxes (n=30) most of the lymphocytes had relatively smooth surface, and only in some cells cytoplasmic protrusions were observed. Large doses of vitamins A and E that were introduced into animal diet, caused significant reduction of morphometric parameters in relatively smooth forms of lymphocytes, while vitamin A changed the microrelief of their surface.