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(12)  Patent Application: (11)  CA 2474806

(54)  AUTOMATIC THRESHOLD SETTING AND BASELINE DETERMINATION FOR REAL-TIME PCR

(54)  DETERMINATION AUTOMATIQUE DE REGLAGE DE SEUIL ET DE LIGNE DE BASE EN PCR TEMPS REEL

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ABSTRACT:  

The invention discloses a system and methods for quantitating the presence of nucleic acid sequences by evaluation of amplification data generated using real-time PCR. In one aspect, the methods may be adapted to identify a threshold and threshold cycle for one or more reactions based upon evaluation of exponential and baseline regions for each amplification reaction. The methodology used in the analysis may be readily automated such that subjective user interpretation of the data is substantially reduced or eliminated.

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(72)  Inventors (Country):    LEWIS, CLINTON   (United States)
WOO, DAVID   (Canada)
ABBASI, NASSER M.   (United States)
(73)  Owners (Country):    APPLERA CORPORATION   (United States)
(71)  Applicants (Country):    APPLERA CORPORATION   (United States)
(74)  Agent:    SIM & MCBURNEY
(45)  Issued:   
(86)  PCT Filing Date:    Feb. 4 , 2003
(87)  PCT Publication Date:    Aug. 14, 2003
       Examination requested:    Aug. 3 , 2004
(51)  International Class (IPC):    G01N 19/00 (2006.01)  
C12Q 1/68 (2006.01)  

        Patent Cooperation Treaty (PCT):    Yes
(85)  National Entry:    Aug. 3 , 2004
(86)  PCT Filing number:PCT/US2003/003299
(87)  International publication number: WO2003/067215

 (30)  Application priority data:
Application No.CountryDate
60/355,661 United States Feb. 7 , 2002 
10/152,280 United States May 20, 2002 

       Availability of licence:    N/A
       Language of filing:    English


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