CA2 and Salmonella Infections: In a few cases (SI Figure S1b), 7-dpi upregulation mediated by the SE challenge and/or supplement in S-II, S-III, and S-IV reached a factor of ~400 to ~500 (CA2) and even ~3100 (BPIFB3), which was comparable to the maximal expression of various genes in response to Salmonella infection in other studies [112].