CD4 and ischemic stroke: Compared with the normal subjects, the ischaemic stroke samples generally contained a decreased infiltration of naive CD4 T cells, CD8 T cells, resting mast cells and eosinophils and an increased infiltration of activated memory CD4 T cells, neutrophils and M0 macrophages (Fig. 6C) (p < 0.05–0.01, respectively).