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.
... Bezopastnosti[?] (MGB, 1946-1954)
Komitet Gosudarstvennoi Bezopasnosti (KGB; 1954-1991)
South Africa
National Intelligence Agency[?]
((South African ...