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11772457001

Roche

TUNEL AP

sufficient for 70 tests, solution, pkg of 3.5 mL

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About This Item

UNSPSC Code:
41105600

form

solution

usage

sufficient for 70 tests

packaging

pkg of 3.5 mL

manufacturer/tradename

Roche

shipped in

wet ice

storage temp.

2-8°C

General description

TUNEL AP is an alkaline phosphatase-labeled antibody used for the in situ detection of apoptosis (programmed cell death) with the TUNEL reaction followed by transmission light microscopy.
The tailing reaction using TdT, also named ISEL (in situ end labeling)[1] or TUNEL (TdT-mediated dUTP nick end labeling),[2][3] has several advantages in comparison to the in situ nick translation (ISNT) using DNA polymerase:
  • Label intensity of apoptotic cells is higher with TUNEL compared to ISNT, resulting in an increased sensitivity.
  • Kinetics of nucleotide incorporation is very rapid with TUNEL compared to the ISNT.
  • TUNEL preferentially labels apoptotic cells compared to necrotic cells.[4]

Application

TUNEL AP is an antibody that is used to convert fluorescence-based TUNEL assays into colorimetric assays suited for light microscopy. The conversion is performed by binding of an anti-fluorescein antibody to FITC-dUTP. The antibody is labeled with alkaline phosphatase (AP). The AP is visualized with a precipitating substrate, such as Fast Red or NBT/BCIP.[4]

Components

Anti-fluorescein antibody, Fab fragment from sheep, conjugated with alkaline phosphatase (AP). Ready-to-use solution.

Other Notes

For life science research only. Not for use in diagnostic procedures.

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hcodes

Hazard Classifications

Skin Sens. 1

Storage Class

12 - Non Combustible Liquids

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WGK 1

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No data available

flash_point_c

No data available


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Simultaneous determination of cell surface antigens and apoptosis.
R Sgonc et al.
Trends in genetics : TIG, 10(2), 41-42 (1994-02-01)
C D Bortner et al.
Trends in cell biology, 5(1), 21-26 (1995-01-01)
The formation of distinct DNA fragments of oligonucleosomal size (180-200 bp lengths) is a biochemical hallmark of apoptosis in many cells. Recent observations also suggest large DNA fragments and even single-strand cleavage events occur during cell death. These observations have
R Gold et al.
The journal of histochemistry and cytochemistry : official journal of the Histochemistry Society, 41(7), 1023-1030 (1993-07-01)
Since DNA fragmentation is a key feature of programmed cell death (PCD) and also occurs in certain stages of necrosis, we have adapted the methodology of in situ nick-translation (ISNT) to detect DNA fragmentation on a single-cell level. We first
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