HL60 cells stably transfected with human FPR2/ALX have been recently described (5 (link)). These cells were grown in RPMI medium (Biochrom) supplemented with 10% FCS (Sigma-Aldrich), 20 mM HEPES (Biochrom), penicillin (100 units/ml), streptomycin (100 µg/ml) (Gibco), 1× GlutaMAX (Gibco), and G418 (Biochrom) at a final concentration of 1 mg/ml. Calcium fluxes were analyzed by stimulating cells loaded with Fluo-3-AM (Molecular Probes), and the fluorescence was monitored with a FACSCalibur flow cytometer (Becton, Dickinson), as recently described (39 (link)).
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