Figure 1.

Total ¹³C Labeling of Amino Acids Derived from Macrophages and M. tuberculosis Protein

GC-MS measured values for the total ¹³C incorporation into proteinogenic amino acids by RPMI-grown Mycobacterium tuberculosis (MTB), intracellular MTB, and infected THP-1 macrophages after 48 hr. The THP-1 cells were prelabeled by passaging with uniformly labeled [U-¹³C₆] glucose prior to the infections. Essential amino acids are indicated (^∗). Error bars indicate SD of triplicate or quadruplicate samples from independent macrophage infections.

See also Table S1.