AAT Bioquest offers fluorescence-based Gram staining kits that provide a rapid, convenient alternative to traditional crystal violet methods. The MycoLight™ Rapid Fluorescence Gram Stain Kits enable researchers to differentiate between gram-positive and gram-negative bacteria using simple one-step protocols compatible with fluorescence microscopy and flow cytometry.

The MycoLight™ Rapid Fluorescence Gram Stain Kits utilize proprietary fluorescent dyes whose differential uptake and retention reflect structural differences between gram-positive and gram-negative bacterial cell envelopes. gram-positive bacteria, with their thick peptidoglycan layer, retain the fluorescent stain differently than Gram-negative bacteria, which have a thinner peptidoglycan layer surrounded by an outer membrane. This differential staining enables rapid identification of bacterial types in live samples without the fixation requirements of traditional methods.