Abstract
Lattice-like coatings, known as perineuronal nets, were lectin-cytochemically stained with the Wisteria floribunda agglutinin in the lateral nucleus and the intermediate division of the basal nucleus of the amygdala in rhesus monkeys. Perineuronal nets were demonstrated around neurons with parvalbumin- or calbindin-D 28k-immunoreactivity, but not around calretinin-containing cells. In parallel dual-peroxidase staining experiments, it was demonstrated that lattice-like coatings exclusively surround GABAergic neurons in this brain region. The novel finding of calbindin-D 28k-immunoreactivity in neurons ensheathed by perineural nets amplifies the panel of revealed markers in such nerve cells and indicates their cytochemical heterogeneity.
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