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Cytokine RT-PCR results for four cytokines from two subjects (lanes 3 and 4) and a positive (lane 1) and negative (lane 2) control for each cytokine. Gel photographs were scanned on a Hewlett-Packard flatbed scanner and composited with Adobe Photoshop 4.0; labels were added with Adobe Illustrator 8.0 on a Power Macintosh computer.
