CD40LG and tuberculosis: This data also supports the view that although the designated NTB controls used in this study might not be appropriate by virtue of their measured high IgG levels (due to impreciseness of existing methods for differentiating LTBI from NTB; which is similarly inferred by slightly raised IgM levels among some NTB pointing to perhaps a more recent exposure to M.tb), they actually at least offer extremities that are consistent with TB biology.