
Keywords: سیستم ایمنی مخاطی; GALT; gut-associated lymphoid tissues; PPs; Peyer's patches; MLN; mesenteric lymph node; DTH; delayed type hypersensitivity; MIS; mucosal immune system; M cell; microfold cell; DC; dendritic cell; SPF; specific pathogen-free; Con A; concanavalin A; LPS;