[A structural and ultrastructural study of the inferior olivary complex in ground squirrels (Citellus citellus L.)]

Morphological characteristics of neurons in the inferior olivary complex of ground squirrels at various ages were studied by a light and electron microscope. This nuclear complex consists of three nuclei: medial accessory olivary nucleus, dorsal accessory olivary nucleus and main olivary nucleus. Its cytoarchitectonics cytoarchitecture was studied by serial sections at the coronary level, stained by kresyl-violet. Two types of olivary neurons were established by silver impregnation in accordance with dendrite ramifications. Nematosomes, special forms of granulated endoplasmic reticulum, which could be probably connected with advancement of age and the process of aging were observed by an electron microscope together with organelles and intranuclear inclusions typical for the relay neurons.