Fig. 4From: The plasma kynurenine-to-tryptophan ratio as a biomarker of tuberculosis disease in people living with HIV on antiretroviral therapy: an exploratory nested case–control studya The plasma K/T ratio after TB treatment in participants who were treated successfully. b The plasma K/T ratio and CD4 count of the participants who had treatment failure. Each dot or line represents an individual. c The median of K/T ratio at the time of TB diagnosis compared to 6 months post treatment among TB participants who were treated successfullyBack to article page