Fig. 4

Immunofluorescence analysis of jejunal tight junction proteins in yellow-feathered broilers under heat stress and supplemented with Enteromorpha prolifera polysaccharides. TN Thermal neutral zone, HS Heat stress, HSE Heat stress group supplemented 0.1% Enteromorpha prolifera polysaccharides. 100× magnification, the scale bars are 100 μm. ^a−cDifferent superscripts indicate a significant difference between groups (P < 0.05)