GTP concentrations are elevated in erythrocytes of renal transplant recipients when conventional immunosuppression is replaced by the inosine monophosphate dehydrogenase inhibitor mycophenolic acid mofetil (MMF). - Goldsmith DJ; Carrey EA; Edbury SM; Marinaki AM; Simmonds HA (Nucleosides, nucleotides & nucleic acids, 2004)