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R&D Systems, Boston Biochem, and Tocris Bioscience cater to a number of important research topics, including: Cancer, Cytokines and Growth Factors, Immunology, Neuroscience, Signal Transduction and many more!


30% off TrueBlack Lipofuscin Autofluorescence Quencher

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Start Date:

Jan 17 2017

End Date:

Mar 31 2017

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TrueBlack: A Superior Alternative to Sudan Black B

TrueBlack™ is a new reagent for quenching lipofuscin autofluorescence in tissue sections for immunofluorescence staining. Lipofuscin consists of highly autofluorescent granules of oxidized proteins and lipids that build up in the lysosomes of aging cells (1). Lipofuscin granules fluoresce brightly in all channels used for fluorescence microscopy, and accumulate in a variety of cell and tissue types with age. Consequently, imaging of specific immunofluorescence signal in certain adult human tissues or aged animal tissues can be virtually impossible unless methods are employed to quench or mask lipofuscin fluorescence.

Traditionally, Sudan Black B has been used to quench lipofuscin autofluorescence by incubating tissue sections with the dye after immunofluorescence staining (2). However, while it masks the autofluorescence from lipofuscin, Sudan Black B also introduces uniform non-specific background fluorescence in the red and far-red channels (Ref. 3 and Fig. 1 below), limiting the use of fluorescent dyes in those wavelengths. Now Biotium has developed TrueBlack™ as a superior alternative to Sudan Black B. TrueBlack quenches lipofuscin fluorescence with far less increase in red/far-red background fluorescence (Fig. 1). TrueBlack™ treatment can be performed before or after immunostaining. It is rapid, simple, and has minimal effect on signal from fluorescent antibodies or nuclear counterstains, thus preserving the signal-to-noise ratio of the immunostaining (Figs. 2-3).

TrueBlack effectively eliminates lipofuscin autofluorescence in tissues like human brain (Ref. 4 and Figs. 1-3 below) and human retina (Ref. 5). TrueBlack also can reduce autofluorescence from other sources, such as collagen, elastin, red blood cells, and general background fluorescence. It is not as effective at quenching these sources of autofluorescence as it is for lipofuscin, but it can improve background in human and non-human tissue types (Figs. 4-5).

  • Eliminates lipofuscin autofluorescence
  • Can reduce autofluorescence from non-lipofuscin sources
  • Doesn’t cause high background like Sudan Black B
  • Clears the way for fluorescence imaging of human and aged animal tissues
Product Name Size Catalog #
TrueBlack Lipofuscin Autofluorescence Quencher, 20X in DMF 1 mL 23007(BT)

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Note: This offer is not valid in conjunction with contract discounts or any other special pricing. Void where prohibited.