ALLOCATION OF PERINEURONAL NETS AND PARVALBUMIN-IMMUNOREACTIVITY, CALBINDIN-D-28K-IMMUNOREACTIVITY AND GLUTAMIC-ACID DECARBOXYLASE-IMMUNOREACTIVITY IN THE AMYGDALA OF THE RHESUS-MONKEY

Lattice-like coatings, known as perineuronal nets, were lectin-cytoche mically stained with the Wisteria floribunda agglutinin in the lateral nucleus and the intermediate division of the basal. nucleus of the am ygdala in rhesus monkeys. Perineuronal nets were demonstrated around n eurons with parvalbumin- or calbindin-D-28k-immunoreactivity, but not around calretinin-containing cells. In parallel dual-peroxidase staini ng experiments, it was demonstrated that lattice-like coatings exclusi vely surround GABAergic neurons in this brain region. The novel findin g of calbindin-D-28k-immunoreactivity in neurons ensheathed by perineu ronal nets amplifies the panel of revealed markers in such nerve cells and indicates their cytochemical heterogeneity.