Chemokine receptor RNA expression by DC. Equivalent amounts of DNase-treated RNA before (−) and after (+) RT were used as a template for PCR using primers specific for the indicated chemokine receptors. PCR products for CCR1 (272 bp), CCR2 (230 bp), CCR3 (444 bp), CCR4 (688 bp), CCR5 (1,117 bp), fusin (1,050 bp), and actin (658 bp) are shown. Molecular weight markers (MW) and their size in basepairs are indicated on the left.