We used WT and floxed GFP-C5aR1 reporter mice (GFP-C5aR1flox/flox) [15] in a model of OVA-driven allergic asthma and assessed C5aR1 expression in myeloid and lymphoid cells isolated from the airways, lung tissue and mLN. The gene discussed is C5AR1; the disease is allergic asthma.