Evaluation of p-STAT3, Ki-67, CD68, Bcl-xL expression in tumor cell-free lymph nodes. A, E: p-STAT3 was detected in nuclei of lymphatic sinus cells, et al (×100). B, F: CD68 was detected in nuclei of lymphatic sinus cells (×100). C, G: Bcl-xL was detected in cytoplasm of lymphatic sinus cells (×100). D, H: Ki-67 was detected in nuclei of lymphatic sinus cells (×100). A-D: High expression; E-H: Low expression.