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Gram Staining

Gram Staining Kits & Reagents, Fixed Cell Stains, Live Cell Stains

Gram staining, named for its originator in 1884, remains the central method in microbiology for bacterial taxonomy by an initial separation into differently-colored Gram-positive or Gram-negative categories. The different colors are due to a polymer called peptidoglycan that is an important part of the bacterial cell wall. Peptidoglycan forms an alternating, tightly-bound crystal lattice that protects the bacteria from osmotic pressures and improves structural strength. 

MycoLight™ Dyes and Kits

Bacterial Viability Assays, Bacterial Membrane Potential Kits, Bacteria Imaging Assays

The MycoLight™ series includes kits and standalone bacteria-labeling dyes for multiple experimental purposes. The need for improved identification and understanding of bacterial behavior has increased markedly in recent years, as bacterial resistance and the possible use of the cell wall as an antibacterial target has gained traction in research applications.  With comparable spectral profiles to classic choices like SYBR®, the MycoLight™ dyes do not affect cell health, allowing further characterization of labeled cell populations. MycoLight™ dyes display excellent brightness and specificity, and are compatible with all major instrument platforms.


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