Fig. 13From: Prostaglandin E2 sensitizes the cough reflex centrally via EP3 receptor-dependent activation of NaV 1.8 channelsThe expression of NaV 1.8 channels on the brainstem nuclei, nTS of guinea pigs. A photomicrograph of cross section of the medulla oblongata through the nucleus tractus solitarius, nTS (blue dotted line circle). A higher magnification view of the nTS is shown in the lower panel. Note all neurons of the nTS are positive for NaV 1.8. CC-Central canal. Scale bar = 15 µm in the upper panel and 30 µm in the lower panel. Blue dotted line indicates the midlineBack to article page