BACKGROUND Natural killer (NK) cells have a spontaneous cytotoxic capacity against
tumor cells. These cells represent a small proportion of human colon carcinoma‐infiltrating …

OBJECTIVE: Natural cytotoxicity, mediated by natural killer (NK) cells, has been believed to
play an important role in inhibiting experimental tumor metastasis, and diminished NK cell …

BACKGROUND Natural killer (NK) cells are a group of effector cells that act nonspecifically
against tumor cells. The correlation between intratumoral NK cell infiltration and …

Background The association between natural killer (NK) cells and survival in colorectal
cancer (CRC) patients remains controversial. This study aimed to clarify the prognostic value …

Purpose: Tumor infiltrating T lymphocytes in colorectal cancer (CRC) have prognostic
impact, but the role of natural killer (NK) cells in CRC tissue is unclear. The contribution of …

Recent evidence suggests that natural killer (NK) cells are typically defective in infiltrating
solid tumors, with the exception of gastrointestinal stromal tumors (GIST). Interestingly …

Background/Aims: To determine whether preoperative natural killer (NK) cell activity has any
prognostic significance in colon cancer patients. Methods: The study population consisted of …

Background: Natural killer (NK) cells are important effector cells in the defense against
tumors. The present study retrospectively examines the intratumoral NK cells in primary …

BACKGROUND Natural cytotoxicity mediated by natural killer (NK) cells is believed to play
an important role in host anticancer defense mechanisms. The aim of this study was to …

Purpose: Human invariant natural killer T (NKT) cells are novel, distinct lymphocyte
populations with a restricted T-cell receptor repertoire (Vα24-Vβ11). They play a pivotal role …