NCAM1 and gastric cancer: The next step in the analysis was to investigate the influence of the age of GC patients on the percentage of occurrence and expression level of TLR-2, -3, -4, and -9 receptors on CD3-CD56+ and CD3+CD56+ cells, with particular attention paid to the differences between the diffuse and intestinal types, which will allow for a better understanding of how age and histopathological type of tumor affect the immune response of patients.