Cultured NK cells (6 days in IL15 10 ng/mL) were purified and stimulated with a plate bound α-NK1.1 antibody (10 μg/mL) in media supplemented with low dose IL15 (5 ng/mL) ± IL2 (20 ng/mL) as indicated, with IL2 (20 ng/mL) plus IL12 (10 ng/mL) or left unstimulated (IL15 - 5 ng/mL). Cells were analysed for rates of glycolysis (a,f,g) and OXPHOS (b,d,e) using the seahorse extracellular flux analyser or by flow cytometry for the expression of CD25 (c), CD71 (h) or CD98 (i). Data is representative (a–d,f) or mean ± SEM (a,b,e, g–i) of 4–5 independent experiments. Data was analyzed using a one way ANOVA and tukey post test (* p < 0.05, ** p < 0.01, *** p < 0.001, ns non-significant).