A quantitative histological method for the identification of a nucleus in the brain. the perifornical nucleus

Cytoarchitectonic characterization of the hypothalamic perifornical nucleus in the rat, has been attempted by quantitative histological analysis. Data are given on the volume, cell numbers and cell densities of the nucleus. The applied method proved suitable for the identification and clear separation from their background of individual brain nuclei and for describing in exact terms the cellular heterogeneity.