Fig. 5.
Double-labelling immunofluorescence of cholera toxin B subunit-containing cells (green) retrogradely labelled after (CTB) injection into the dorsal vagal complex, and cocaine- and amphetamine-regulated transcript-immunofluorescent neurons (red) in the hypothalamic paraventricular nucleus (PVN). Due to the colour mixing, the double-labelled neurons (arrows) appear yellow. Note the large number of double-labelled neurons in the PVN. III, Third ventricle. Scale bars: (a) 90 µm; 30 µm in (c) corresponds to (b) and (c).