Figure 2

The numbers of lymphocyte subsets before CRT and tumor reduction ratio in response to CRT. The longitudinal length of the rectal tumor was measured by barium enema before and after CRT, and the tumor reduction ratio was calculated. Histological response grade was evaluated by the pathologists, according to the definitions in the Japanese Classification of Colorectal Carcinoma. The correlations between the numbers of T lymphocytes (A), Th lymphocytes (B) and Tc lymphocytes (C) and tumor reduction rate are presented. Correlations of coefficient are presented as r.