Fig. 1From: Expression of C-terminal ALK, RET, or ROS1 in lung cancer cells with or without fusionRT-PCR analysis of ALK, RET, or ROS1 mRNA in 37 cancer cell lines. The mRNA expression of ALK (a), RET (b), or ROS1 (c) was determined by RT-PCR using the aqman probes (Additional file 2: Tables S2). Exons of each probe are shown on the X-axis. The relative mRNA expression was calculated as the ratio of the normalized value with GAPDH mRNA to the median of that in 37 cell linesBack to article page