ObjectiveTo investigate the effects of Qiwei Baizhu Powder, Qiwei Baizhu Drops and Qiwei Baizhu extracts on the ultrastructure of small intestinal mucosa and sIgA in mice with intestinal dysbacteriosis. MethodsMice were gavaged with Ceftriaxone, Lincomycin hydrochloride and iced senna liquid to make intestinal dysbacteriosis models, which were divided into 5 groups: model group (MG) (i.e. spontaneous recovery group upon success of modeling, ZHG), normal group (NG), decoction group (QJG), Drops group (QDG) and extracts group (QTG). Electron microscope was used to observe the ultrastructure of s...