Lung biopsy slices resected from patients with mild atopic asthma revealed the presence of extravascular CD42b+ platelets in the submucosa (P < 0.05; 6.6 ± 1.9 platelets per field of view; n = 9) and within the epithelial layer (P < 0.05; 3.0 ± 0.7 platelets per field of view; n = 9), which appeared mostly as singular events compared with their appearance in nonasthmatic tissue (Figures 1A–1D). Here, GP1BA is linked to atopic asthma.