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Identification of circHIPK3 and cir_ITCH in a human lung adenocarcinoma epithelial cell line (A540). A) RT-PCR products with divergent and convergent primers of circHIPK3 verified that specificity of designed primers. B) Specific divergent primers of cir_ITCH could amplify a 207 bp PCR product using a cDNA as a PCR template but not a genomic DNA (gDNA).
