A [U 13 C] glucose tracing. CAR-T cells GLUT1OE were administered 11 mM labeled glucose 4 h idiotype stimulation. X axis reflects isotopologue. Y axis represents Height in aleatory units. Statistics generated by paired, two tailed t -test (90% confidence) based on sum of total isotopologues 1 in each condition. Data from n = 3 donors. Error bars represent SD.