title: Nonstaining (KOH) method for determination of gram reactions of marine bacteria.
abstract: A rapid nonstaining (KOH) method for the determination of the Gram reactions of bacteria is described, and its application to marine isolates is discussed. All gram-positive and gram-negative results obtained by Gram staining were confirmed by the KOH method. Gram-variable bacteria produced equivocal results.
mesh_terms: D001419:Bacteria / Q000302:isolation & purification*; D001431:Bacteriological Techniques; D006878:Hydroxides; D011188:Potassium; D017680:Potassium Compounds; D013194:Staining and Labeling; D014871:Water Microbiology
chemical_list: D006878:Hydroxides; D017680:Potassium Compounds; D011188:Potassium; C029943:potassium hydroxide