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Agarose gel electrophoresis of PCR products. Human heavy and light chain immunoglobulin variable region genes in (A) peripheral blood mononuclear cells from a healthy donor (B-D) in samples from patients with gastric cancer tissues. Specific bands are shown between each group. Lanes 1-3, VH1-VH3-IgG; lanes 4-6, VH1-VH3-IgM; lanes 7-9, vK1/4-vK3; lanes 10-15, VA1-VA6. VH, variable heavy chain; vK, κ variable light chain; VA, λ variable light chain.
