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Principle and workflow of the T-Track® TB assay. Abbreviations: cDNA, complementary DNA; control, stimulation control (PHA-stimulated); ESAT-6, Early Secreted Antigenic Target 6 kDa (TB antigen); CFP-10, Culture Filtrate Protein 10 (TB antigen); CXCL10, C-X-C motif chemokine ligand 10 (biomarker); IFNG, interferon gamma (biomarker); PHA, phytohemagglutinin; qPCR, quantitative PCR; stim, stimulated (with TB antigens); unstim, unstimulated negative control.
