2644 Comparison of PD-1 expression between circulating and tissue-infiltrating lymphocytes in renal cell carcinoma. (September 2015) - Kawashima, A.; Kanazawa, T.; Matsumoto, M.; Morimoto, A.; Iwahori, K.; Ujike, T.; Nagahara, A.; Fujita, K.; Uemura, M.; Nonomura, N.; Wada, H.