
Keywords: HR–MAS; NMR; Breast cancer; Metabolic profile; MetabolomicsNMR, nuclear magnetic resonance; 1H HR–MAS, high-resolution magic angle spinning; CPMG, Carr–Purcell–Meiboom–Gill; DMEM, Dulbecco's modified Eagle's medium; T, tesla; 2D, two-dimensional; COSY, co