[Differences in macroglia of the spinal cord in various cold-blooded and warm-blooded animals]

Certain macroglial differences of the spinal cord in poikilothermal (Rana esculenta, Lacerta agilis) and in homoiothermal (Columba livia, Felis domesticus, Macaca rhesus) animals have been revealed. A greater amount of glial satellites, surrounding neurons, motor centers of the spinal cord and appearance of new variety of astrocytes and oligodendrocytes are observed in the homoiothermal animals. It is supposed that the phenomenon mentioned indirectly reflects the evolutionary process of a more distinct functional differentiation of macroglia.