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DeadEnd Colorimetric TUNEL System, Promega

Supplier: EBRO Electronic GmbH
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G3250 G7130 G7360
PAG3250EA 861.9 USD InStock
PAG3250 PAG7130 PAG7360
DeadEnd Colorimetric TUNEL System, Promega
Assays Cellular Assays
A modified TUNEL Assay designed for simple, rapid detection of apoptotic cells in situ at the single-cell level. Measures nuclear DNA fragmentation.

  • A Modified TUNEL Assay for Detection of Apoptotic Cells In Situ
  • Detects apoptosis in tissue sections or cell cultures

The DeadEnd Colorimetric TUNEL System is a modified TUNEL Assay designed to provide simple, accurate and rapid detection of apoptotic cells in situ at the single-cell level. The DeadEnd Colorimetric TUNEL System measures nuclear DNA fragmentation, an important biochemical indicator of apoptosis. The system can be used to assay apoptotic cell death in both tissue sections and cultured cells. The DeadEnd Colorimetric TUNEL System end-labels the fragmented DNA of apoptotic cells using a modified TUNEL (TdT-mediated dUTP Nick-End Labeling) assay. Biotinylated nucleotide is incorporated at the 3'-OH DNA ends using the enzyme Terminal Deoxynucleotidyl Transferase (TdT). Horseradish-peroxidase-labeled streptavidin (Streptavidin HRP) is then bound to these biotinylated nucleotides, which are detected using the peroxidase substrate, hydrogen peroxide, and the stable chromogen, diaminobenzidine (DAB). Using this procedure, apoptotic nuclei are stained dark brown.

Using this procedure, apoptotic nuclei are stained dark brown. The protocol for the DeadEnd TUNEL Assay recommends an optional DNase I treatment of samples as a positive control to detect DNA fragmentation.

Biotinylated nucleotide is incorporated at the 3´-OH DNA ends using Terminal Deoxynucleotidyl Transferase (TdT). Horseradish-peroxidase-labeled streptavidin (Streptavidin HRP) is then bound to these biotinylated nucleotides, which are detected using the peroxidase substrate, hydrogen peroxide, and the stable chromogen, diaminobenzidine (DAB).


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