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DNA sequencing by mass spectrometry

  • US 6,225,450 B1
  • Filed: 06/07/1995
  • Issued: 05/01/2001
  • Est. Priority Date: 01/07/1993
  • Status: Expired due to Term
First Claim
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1. An intact ionized and volatilized mass-modified nucleic acid molecule, comprising at least two mass modified nucleotides, wherein the molecule is positively charged.

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