Figure 1From: Latent Tuberculosis in HIV positive, diagnosed by the M. Tuberculosis Specific Interferon-γ testIFN-γ release after stimulation of whole blood with either TB antigen (left) or Phytohaematglutinin (PHA)(mitogen) (right). All results are stratified into intervals according to the level of IFN-γ released after stimulation and the number of individuals with IFN-γ release within each interval are shown.Back to article page