Extended Data Fig. 3: The FG signal in the splenic nerve and vagal efferent following FG injection into the spleen.

a, Schematic diagram for Flouro-Gold (FG) injection into the spleen of C57 mice. b,c, Representative images showing FG co-localization with TUBB3 antibody in the splenic nerve (b) and vagus nerve (c). Scale bars, 50 µm. d, Representative images showing the FG signals in the celiac ganglion. Scale bar, 10 µm.