MKI67 and cancer: The recognition and counting of cancer cells with DAPI staining (Fig. 3A1), cancer cells with Ki67 staining in CK stained area (Fig. 3B,B2), and original image of CK, Ki67 and DAPI imaging (Fig. 3C1) and merged image of recognition and counting of cancer cells with DAPI staining and Ki67 staining (Fig. 3C2) were depicted in Fig. 3.