Expression of GIRK3 in SCLC cell lines. Top panel: GIRK3 expression was seen in all six SCLC cell lines, in WBA, H69, H146, H187, H209, and H526. Bottom panel: Cyclophilin, used as a positive reaction control was seen in all samples. For all gene expression experiments, negative control reactions were performed and found to be negative. The bands on the agarose gels were consistent with the expected sizes: GIRK3-317 bp; cyclophilin-216 bp; M-100 bp.