CDK1 and lung adenocarcinoma: At the same time, we collected six post-operative samples of lung adenocarcinoma from the First Affiliated Hospital of Chongqing Medical University, measured the expression of LINC00261 and CDK1 in tumor tissues and adjacent noncancerous tissues by RT-qPCR, respectively (the data of one patient was discarded due to internal reference error), and performed comparative analysis; the results are shown in Figure 3F,G.