SLC2A1 and neoplasm: Conversely, tumor-infiltrating T cell subsets from LDHi-treated mice displayed higher levels of glucose uptake compared with those from vehicle-treated mice, both ex vivo and in vivo (Figure 4C and Supplemental Figure 5A), as well as elevated GLUT1 expression (Figure 4D), while glucose uptake and GLUT1 expression in T cells from the spleen and whole blood remained unchanged (Figure 4, C and D, and Supplemental Figure 5B).