Nucleobase Transport ProteinsHypoxanthineEquilibrative-Nucleoside Transporter 2HypoxanthinesEquilibrative Nucleoside Transporter 1Purine NucleosidesNucleoside Transport ProteinsThioinosineSalvage TherapyMembrane Transport ProteinsBiological TransportFatty Acid Transport ProteinsBiological Transport, ActiveLimb SalvageNucleosidesCarrier ProteinsPurinesMonosaccharide Transport Proteins