Expression of 268 genes coding for cytokines, cytokine receptors, and closely related proteins in the XG-14 HMCL and the EBV-14 LCL.

Poly(A)⁺RNA was extracted from each cell line and used to synthesize radiolabeled cDNA. Radiolabeled cDNAs were hybridized to 2 identical gene array membranes (Atlas Human Cytokine/Receptor Array, ClonTech) and radioactivity was analyzed with a PhosphoImager. Each gene is represented by duplicate spots. Filled arrows highlight several genes that are overexpressed in the myeloma sample, whereas open arrows point out the same genes in the LCL sample.