Fos expression in catecholaminergic medullary neurons induced by chemical stimulation of stomach projecting to the paraventricular nucleus of the hypothalamus in rats

Figure 2 A: Fos-like immunoreactive neurons (open triangle) and Fos-like immunoreactive/Tyrosin hydroxylase-like immunoreactive double-labeled neuron (arrow) in the nucleus tractus solitarii of medulla; B: Tyrosin hydroxylase-like immunoreactive (open triangle) and Fos-like immunoreactive/Horseradish peroxidase/Tyrosin hydroxylase-like immunoreactive triple-labeled neuron (arrow) in the nucleus tractus solitarii of medulla, × 400.