Figure 2. The anterior midgut of adult flies containing CCHamide-2 immunoreactive endocrine cells.

(See figure 3 for a schematic drawing.) A. An overview of the anterior midgut showing the gut lumen and CCHamide-2 containing endocrine cells that project small hair-like processes (arrows) into the lumen. Note that these cells are 25-50 µm. Scale bar = 50 µm. B. Close up of the endocrine cells in the anterior midgut, showing that their bases are in contact with the body cavity and that their more slender apical parts project into the lumen. Scale bar = 20 µm.