11. She noted that the methylene blue dye used in the experiment was not reduced. 12. The aqueous solution in the classical reaction contains glucose, sodium hydroxide and methylene blue . 13. After mid-1889, when Ehrlich was unemployed, he privately continued his research on methylene blue . 14. The method commercially used by Flexplay and SpectraDisc employs methylene blue reduced by sodium dithionite. 15. Methylene blue can be used to stain plant cells16. Therapy with ascorbic acid and methylene blue are frequently used in the treatment of methemoglobinemia. 17. Methylene blue restores the iron in hemoglobin to its normal ( reduced ) oxygen-carrying state.18. Methemoglobinemia has also been seen, although it is typically responsive to treatment with methylene blue . 19. Copper is used as a catalyst, for the reoxidation of leucomethylene blue to methylene blue . 20. In addition, it oxidised Methylene blue at a faster rate than standard solar disinfection methods.