CD79A and infection: Given the early reaction of neutrophils, they are expected to primarily control B. bronchiseptica early on in the infection, while specific IgG and, secondly, specific IgA appear to be more important at a later time, as they decreased more slowly, such is the case for IgA, or remained consistently high over the course of the infection, like for IgG (Figures 5 and 6).