CD4 and asthma: Using TCR Vα24+/TCR Vβ11+ double-positive cells as NKT cells, we observed changes in the number of NKT cells and CD4+NKT cells TCR Vα24/TCR Vβ11 cells by immunofluorescent labeling and flow cytometry method in children with asthma, children with asthma treated with standard SIT for more than 1 year, and normal children.