Immunocytochemical identification and localization of APUD cells in the gut of seven stomachless teleost fishes

Figure 1 IR endocrine cells in epithelium (↑) and lamina propria (-), × 100

Figure 2 IR endocrine cells (↑) in bottom part of the gut f old, × 200

Figure 3 IR endocrine cells in apical part of the gut fold, × 400

Figure 4 Basal processes (↑) extended to basement membrane, × 600

Figure 5 IR endocrine cells of open type (↑) and close type (-), × 600

Figure 6 Enlarged process (↑) in sac-shaped, × 1000

Figure 7 Apical process (↑) as sac in shape, basal process (-) like synapse, × 1000

Figure 8 Apical process (↑) as sac in shape, basal process (-) like synapse, × 1000

Figure 9 Basal process (-) extended to basement membrane, × 1000

Figure 10 Apical process (↑) as sac in shape, basal process (-) formed an enlarged synapse-like structure, × 1000-In figures, ★: goblet cell; L: gut lumen; M: basement membrane.