Representative ex vivo 31P-MRS of perfused rat brain slices perfused with 500 μg l−1 cyclosporine for 10 h. CsA, cyclosporine; NAD+, nicotinamide adenine dinucleotide; ATP, adenosine triphosphates; PCr, phosphocreatine; Pi, intracellular inorganic phosphate; PME, phosphomonoesthers.