a: 31P spectra from living malignant and benign TSCs perfused in the MR-compatible bioreactor. b: Timecourse of βNTP demonstrating preservation of ATP in the bioreactor. c: Ratios of metabolites to βNTP in benign and malignant TSCs (N = 4). d: Representative H&E staining of TSCs post-perfusion in the bioreactor. PCr, phosphocreatine; PC, phosphocholine; PE, phosphoethanolamine; GPC, glycerophosphocholine; α, β, γ-NTPs, nucleotide triphosphates. All ratios reported as mean ± SE. *P < 0.05.