The types of neurons in the neostriatum of bison bonasus. Nissl and Golgi study.

The caudate nucleus and the putamen of bison bonasus have been investigated. The Golgi procedure and Nissl stain had been used to reveal their cellular organization. In the Golgi preparation striatal neurons belong to the two fairly divergent main groups in which several types of cells can be distinguished. The first class, comprising the bulk of neuronal population, consists of only one type of efferent cells with the long axons. The spines cover dendrites except its proximal portion. The second one is composed of four types of interneurons which perikarya and dendritic processes are devoid of spines: aspiny neurons with tortuous dendrites, aspiny cells with dendritic swellings, large aspiny nerve cells, and long-axoned neurons with sparsely distributed but regularly branching dendritic processes.