In addition, total immune cell number, comprising innate lymphoid type 2 cells (ILC2s), T cells, eosinophils, mast cells, B cells, macrophages, CD8+ T cells, and NK cells, was higher in asthma airways with and without mucus plugs than in lung disease–free control airways (Figure 5, G and H). The gene discussed is CD8A; the disease is asthma.