Comparative studies on the neurosecretory system of some species of voles

Studies were carried out on the neurosecretory system secreting vasopressin and oxytocin in three species of the subfamily Microtinae: Microtus agrestis, Clethrionomys glareolus and Pitymys subterraneus. Examination was made of the following: supraoptic nucleus, paraventricular nucleus, eminentia mediana pars nervosa of the pituitary gland. The studies show that from the morphological aspect the neurosecretory system is most similar in the European pine vole and bank vole, but differs slightly in the field vole.