Figure 1. CNN3 expression in osteosarcoma and normal specimens detected by immunohistochemistry. (A) Representative images. (B) Statistical results of the CNN3 staining total score. p<0.0001, unpaired t-tests. (C) Receiver operating characteristic (ROC) curve analysis to assess the diagnostic value of CNN3 in osteosarcoma using the GraphPad Prism 7.0 version.