NCAM1 and non-small cell lung carcinoma: In NSCLC tissues, CD56+ NK cells with 1, 2 and 3 degree of infiltration were 44.0%, 22.6%, 33.3%, CD16+ NK cells were 45.2%, 22.6%, 32.1%, and CD56+CD16+ NK cells were 45.2%, 23.8%, 31.0%, respectively.