Fig. 7

Gut infiltration with immune cells in the piglets of the present study. (A) Histological scores in the small intestine independently of dietary insect meal inclusion. Graph bars with superscript letters (a, b) differ significantly (P < 0.05). (B) HI5 group. Mild, multifocal mucosal (arrow) and submucosal (arrowhead) lymphoplasmacytic infiltration is observed in the jejunum. Haematoxylin & Eosin stain, 5× magnification). (C) C group. The ileum shows severe, focal mucosal and submucosal lymphoplasmacytic infiltration (arrowhead), as well as severe, multifocal Gut-Associated Lymphoid Tissue (GALT) activation (arrow). Haematoxylin & Eosin stain, 2.5× magnification