“…The murine macrophage cell line, RAW 264.7, was purchased from the American Type Culture Collection (Manassas, VA) and cultured as described in our earlier study. 13 RAW 264.7 macrophages were maintained in cell culture medium composed of Dulbecco's modified Eagle medium (Invitrogen Life Technologies, Carlsbad, CA), 10% fetal bovine serum (Invitrogen), 100 unit/mL of penicillin (Invitrogen), and 100 mg/mL of streptomycin (Invitrogen) at 37°C in a humidified incubator with 5% CO 2 .…”