| 摘要 |
2119140 9306243 PCTABS00021 Method for sequencing DNA which includes the following steps: providing a polynucleotide primer complementary to a region of the DNA, providing the DNA to be sequenced, and contacting that primer and DNA together in the presence of a DNA polymerase and between 1 and 3 dNTPs, at least one of the dNTP being labeled. The primer and DNA are contacted under conditions which allow extension of the primer by addition of one or more of the dNTPs to the primer to form an extended primer. The primer and DNA are then dissociated, generally be heating, and the contacting and dissociating steps repeated a plurality of times (usually 10-200 times). Finally, the extended primer is contacted with the DNA in the presence of a DNA polymerase (which is generally the same polymerase as used in the initial labeling step) all four dNTPs and a chain terminating agent.
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