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Abstract

We performed a quantitative morphocytochemical study of neuronal populations in the lateral cerebellar nucleus in birds and mammals of some ecological and morphological groups. Morphological parameters of neuronal density, linear values, and structural nuclear-cytoplasmic index of cells were compared. Specific features of neuronal proteins in cerebellar nuclei were revealed. We revealed objective criteria for adaptive capacities at the level of cell populations in the lateral cerebellar nuclei of animals adapted to various environmental conditions. Our results extend the notion about morphological characteristics of synanthropic birds and rodents that carry infections and invasions hazardous to humans.