 NKT cells   Sputum   Control subjects                                                     0--0.0% of CD0^+^ cells                                                                                                                                                                                                                                                                               Subject with moderately severe asthma treated with corticosteroids   0--0.0% of CD0^+^ cells                                                                                                                                                                                                                                                                               Subject with mild asthma not treated with corticosteroids            0--0.0% of CD0^+^ cells                                                                                                                                                                                                                                          Vα00^+^ 