APOE and non-small cell lung carcinoma: As for the malignant tissues, for each of the seven cell subgroups of lung malignant tissues in non-small cell lung cancer, IGLC2 (rule 17), AXL (rule 189), SERPINA1 (rule 190), CALD1 (rule 265), APOE (rule 383), S100A8 (rule 393), and GSN (rule 405) are useful in distinguishing the following cell subgroups: B lymphocytes [84], endothelial cells [85], epithelial cells [86], fibroblasts [87], mast cells [88], myeloid cells [89], and T/NK cells [90].