title: Natural killer cell activity in oral cancer patients. I. Correlation with tumor size and metastasis in regional lymph nodes.
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D007694:Killer Cells, Natural / Q000276:immunology*; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D009062:Mouth Neoplasms / Q000276:immunology* / Q000473:pathology