Figure 6

Pathological changes in mouse duodenal tissue. Three days after dosing, the toxicity of IFNα/γ@PAMgel was evaluated according to the degree of pathological damage to the mouse duodenal tissue. A Histopathological observation of haematoxylin‒eosin (H&E)-stained sections from the control group. B Histopathological observation of haematoxylin‒eosin (H&E)-stained sections from the IFNα/γ@PAMgel group.