DIFFERENTIAL LABELING OF PRIMARY OLFACTORY SYSTEM SUBCOMPONENTS BY SBA (LECTIN) AND NADPH-D HISTOCHEMISTRY IN THE FROG PIPA

SBA and NADPH-d histochemistries allow identification of functionally distinct components of the amphibian primary olfactory system. In Pipa , a secondarily aquatic frog, combination of both methodologies, using alternate sets of histological sections, reveals that, apart from Jac obson's organ, this species has a ''water-nose'' and an ''air-nose''. The epithelia occupy separate chambers of the olfactory organ and give rise to olfactory nerve fiber bundles that are identified by the dual staining procedure. (C) 1997 Elsevier Science B.V.