by Philipp Kressirer, LMU University Hospital Munich Frequencies of CD38+ MTB-specific IFNγ+ CD4 T cells over time in AFRICOS study participants with LTBI, incipient TB and active TB. The figure shows the frequencies of MTB-specific CD4 T cells that express CD38 (as % IFNg+ cells) over time using the indicated color code. (A) shows CD38+...