Objective To study maturation,apoptosis,signal pathway and inflammatory cytokines of dendritic cell when infected with intestinal virus EV71. Methods Patients were divided into three groups according to the degree of infection: the control group( n = 20),the mild group( n = 20) and the severe group( n = 20). The percentage of CD11 c,CD86,CD80 and CD83 expression in peripheral blood DC were detected by flow cytometry; the phosphorylation of MAPK signal transduction pathway in DC was detected by Western blot;...