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Cited by 1,195

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COBRA: a sensitive and quantitative DNA methylation assay

Open access
Xiong, Z., Laird, P. W.·1997·Nucleic Acids Research

Abstract

We report here on a quantitative technique called COBRA to determine DNA methylation levels at specific gene loci in small amounts of genomic DNA. Restriction enzyme digestion is used to reveal methylation-dependent sequence differences in PCR products of sodium bisulfite-treated DNA as described previously. We show that methylation levels in the original DNA sample are represented by the relative amounts of digested and undigested PCR product in a linearly quantitative fashion across a wide spectrum of DNA methylation levels. In addition, we show that this technique can be reliably applied to DNA obtained from microdissected paraffin-embedded tissue samples. COBRA thus combines the powerful features of ease of use, quantitative accuracy, and compatibility with paraffin sections.

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Crossref · 10.1093/nar/25.12.2532

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Metadata

Authors
Xiong, Z., & Laird, P. W.
Venue
Nucleic Acids Research
Published
1997-06-01
Volume
25
Issue
12
Pages
2532-2534
ISSN
  • 0305-1048 (ISSN-L)
  • 1362-4962
OpenAlex
W2063110349
Cited by
1,195
References
1
FWCI
4.95
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: COBRA: a sensitive and quantitative DNA methylation assay. https://app.cochat.ai/papers/10.1093/nar/25.12.2532
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Xiong, Z., & Laird, P. W. (1997). COBRA: a sensitive and quantitative DNA methylation assay. Nucleic Acids Research. https://doi.org/10.1093/nar/25.12.2532

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