Figure 3.

Time course ¹³C NMR spectra of perfused DB-1 melanoma cells in a bioreactor (A), and of a DB-1 melanoma xenograft (B). Glu, glutamate; Lac, lactate; Glc, glucose; std, ethanol in capillary; FA, –CH₂– groups in long chain fatty acids. [1,6-¹³C₂] glucose was used as the substrate for ¹³C-labeling.