SIGMAFAST 3,3′-Diaminobenzidine tablets

tablet, To prepare 15 mL

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water: 1 tablet/5 mL

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Developed for use in immunohistology and immunoblotting as a precipitating substrate for the localization of peroxidase activity. DAB is the immunohistology substrate of choice as it produces an intense brown-black stain which is resistant to alcohol. Slides stained with DAB may be dehydrated, mounted in resinous media, and stored for future reference. SIGMAFAST DAB Tablets require no additional buffers or steps to prepare an active substrate solution. Tablets are individually packaged in foil packets


Each tablet set dissolved in 15 mL deionized water yields a ready-to-use buffered solution containing DAB and urea hydrogen peroxide.

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SIGMAFAST is a trademark of Sigma-Aldrich Co. LLC


Exclamation markHealth hazard

Signal Word


Target Organs

Respiratory system


UN 3316 9

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Huiming Yang et al.
Nature communications, 11(1), 2582-2582 (2020-05-24)
Polyglutamine expansion in proteins can cause selective neurodegeneration, although the mechanisms are not fully understood. In Huntington's disease (HD), proteolytic processing generates toxic N-terminal huntingtin (HTT) fragments that preferentially kill striatal neurons. Here, using CRISPR/Cas9 to truncate full-length mutant HTT...
F Gualtieri et al.
Scientific reports, 9(1), 7129-7129 (2019-05-11)
In the mammalian brain, adult hippocampal neurogenesis (AHN) is suppressed by chronic stress, primarily at the ventral pole of the hippocampus. Based upon anatomy, we hypothesise that the caudal pole of the avian Hippocampal Formation (HF) presents a homologous subregion....
Erin N Scully et al.
Behavioural brain research, 331, 151-158 (2017-05-17)
Zebra finches (Taeniopygia guttata) are sexually dimorphic songbirds, not only in appearance but also in vocal production: while males produce both calls and songs, females only produce calls. This dimorphism provides a means to contrast the auditory perception of vocalizations...
Donald G Matthews et al.
Antioxidants (Basel, Switzerland), 8(12) (2019-12-11)
Centella asiatica (CA) herb is a traditional medicine, long reputed to provide cognitive benefits. We have reported that CA water extract (CAW) treatment improves cognitive function of aged Alzheimer's disease (AD) model Tg2576 and wild-type (WT) mice, and induces an...
Jay Li et al.
eLife, 9 (2020-03-24)
Genetic redundancy can be exploited to identify therapeutic targets for inherited disorders. We explored this possibility in DYT1 dystonia, a neurodevelopmental movement disorder caused by a loss-of-function (LOF) mutation in the TOR1A gene encoding torsinA. Prior work demonstrates that torsinA...
Nitroblue Tetrazolium (NBT) is used with the alkaline phosphatase substrate 5-Bromo- 4-Chloro-3-Indolyl Phosphate (BCIP) in western blotting and immunohistological staining procedures. These substrate systems produce an insoluble NBT diformazan end product that is blue to purple in color and can be observed visually.
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Use this protocol to for the entire immunohistochemistry (IHC) procedure through staining and visualization of specific antigens in paraffin-embedded tissue sections.
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