Complex sentence: To prevent the loss of endogenous dicarboxylates, OAT1-positive cells also express a sodium-dicarboxylate cotransporter called NaDC3 that transports dicarboxylates back into the OAT1-positive cell.
Split into simpler sentences: To prevent the loss of endogenous dicarboxylates, OAT1-positive cells also express a sodium-dicarboxylate cotransporter called NaDC3. NaDC3 transports dicarboxylates back into the OAT1-positive cell.