Based on observing lower numbers of iNKT cells in the spleen of naive Alox15−/− mice (data not shown) and intact levels of the iNKT chemokine CCL17 (data not shown) in the lung during IA, it is tempting to speculate whether iNKT cell development as opposed to 12/15-LOX-mediated recruitment is impaired in Alox15−/− mice during infection. Here, CCL17 is linked to infection.