BMC Genomics 2007, 8:42 http://www.biomedcentral.com/1471-2164/8/42 PFrigimuerree2xtension results from WERI-RB1 retina cell lines mRNA Primer extension results from WERI-RB1 retina cell lines mRNA. Primer extension products obtained with the gene specific primer for CNGA3 (A) and for RDH12 (B). The blue peaks in each panel correspond to the primer extension product (FAM-labelled cDNA). The elongation products size 350 bp and 215 bp were respectively expected from the data of RACE cDNA sequences (Blue arrow). Red peaks are the GeneScanR-500 ROX internal lane standards. In the y-axis is indicated the intensity of fluorescence, in the x-axis the number of nucleotides. Page 8 of 14 (page number not for citation purposes)