ADRB2 and congenital rubella syndrome: Moreover, we found that pSTAT6 expression was up‐regulated in neutrophils in CAA‐CRS brains in vivo (Figure 7G) and NE‐treated BMDN in vitro (Figure 7H,I; Figure S14C, Supporting Information), and expression of β‐AR upregulated on neutrophils in brains of mice received chronic stress (Figure S14D, Supporting Information).