Fig. 1From: Comparison of acridine orange fluorescent microscopy and gram stain light microscopy for the rapid detection of bacteria in cerebrospinal fluidCSF smear stained with Gram’s stain and acridine orange stain. a Image of a positive Gram’s stain slide showing pink coloured Gram negative diplococci bacteria. b Image of a positive acridine orange stained slide showing bacteria fluorescing orange red against a dark background using a blue filter on a fluorescent microscopeBack to article page