Fig. 2.

Representative images of ZnT3⁺ neurons located in the duodenal MP of the pig. Merged images (d, h, l) are composites of images taken separately from red (a, c, i), green (b, f, j), and blue (c, g, k) fluorescent channels. Scale bar = 25 μm. a–d ZnT3⁺/VAChT⁻/NOS⁺—long arrows, ZnT3⁺/VAChT⁺/NOS⁻—small arrow; e–h ZnT3⁺/VAChT⁻/VIP⁺—long arrow, ZnT3⁺/VACHT⁺/VIP⁻—small arrow; i–l ZnT3⁺/SOM⁻/LENK⁺—long arrow, ZnT3⁺/SOM⁺/LENK⁻—small arrow