Anti-PVK

In agreement with the mass spectrometric methods (Predel et al.2004) revealed immunocytochemical methods a tagma specific distribution of periviscerokinin-1-immunoreactivity exclusively in the abdominal perisympathetic organs but never in thoracic PSO or the retrocerebral complex of Periplaneta americana (Fig 1: PSO of third abdominal ganglia). In the contrary a anti-PVK-1- immunoreactivity is displayed in the thoracic PSOs of the ventral nerve cord from larval Drosophila melanogaster (Fig 2).