Methylene Blue, methylthionine chloride or 3,7-bis(dimethylamino)phenothiazin-5-ium chloride is a chemical compound used as a dye and medication for Gram's stain, Wright stain[?], and the treatment of metoxyhemoglobinemia.
... Trudeau thus was forced to include the notwithstanding clause to allow provinces to opt out of certain areas of the charter. Pressure from the left in the country, ...