Acutely malnourished children had higher IgA-targeting of Bacteroidales and Escherichia coli, while patients with inflammatory bowel disease (IBD) had higher targeting of a variety of bacteria including Haemophilus and E. coli [16–18], and these IgA+ bacteria induced intestinal inflammation and disease when transferred into germ-free mice. The gene discussed is CD79A; the disease is inflammation.