OVA or HDM challenge: 1. No difference in AHR between WT and CD1d-deficient mice challenged with OVA or HDM 2. No change in the number of NKT cells in the lung after challenge 3. No difference in severity of AHR when anti-CD1d mAb was administered to the OVA-induced asthma model. Here, CD1D is linked to asthma.