In addition, salvianolic acid B (19) also significantly increased the levels of peripheral blood CD4+ T cells and CD4+/CD8+ T cells, increased the levels of serum IgA, IgG, and IgM, and reduced the levels of IL-1β, IL-6, IL-8, and TNF-α, thus improving the immune function and inflammatory response of thoracic aortic aneurysms in rats [112]. The gene discussed is CD4; the disease is thoracic aortic aneurysm.