We also saw a significantly increased expression of CD38 on both the CD4+ (median% = 6.3 for TB and 2.4 for non-TB) and CD56+ cells (median% = 17 for TB and 4.1 for non-TB) (p = 0.0065 and p = 0.0031 respectively; Table 2). This evidence concerns the gene NCAM1 and tuberculosis.