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Type I interferon (IFN) induces chemokine protein production in human pulmonary arterial endothelial cells (HPAEC). (a,d) Unstimulated; (b,e) IFN-α-stimulated; and (c,f) IFN-β-stimulated HPAEC stained by anti-CX3CL1 or anti-CCL5 antibody, respectively (green). The nuclei were stained with TO-PRO®-3 (red). Representative immunofluorescence images from three independent experiments are shown.
