2-(3-Phenyl-4,5-dihydroisoxazol-5-yl)acetic Acid reduces the secretion of IL-1β, TNF-α and IL-10 from purified murine macrophages but not of T cells; and reduces the activation of NF-κB and p38 MAP kinase pathways along with up-regulation of ERK pathways. 2-(3-Phenyl-4,5-dihydroisoxazol-5-yl)acetic Acid inhibits proliferation of enterobacterial antigen-reactive CD4+CD25- T cells in vitro .