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    • 7. 发明授权
    • Method for determining the length of a nucleic acid molecule
    • 确定核酸分子长度的方法
    • US07176003B2
    • 2007-02-13
    • US10220330
    • 2001-03-06
    • David James SquirrellMartin Alan Lee
    • David James SquirrellMartin Alan Lee
    • C12P19/34C12Q1/68C07H21/04G01N21/64
    • C12Q1/68
    • A method of determining the length of a particular region within a nucleic acid, the method comprising a) subjecting a sample of the nucleic acid to a plurality of amplification reactions in which the region is amplified, wherein the time of the extension phase in each of the reactions is varied; b) monitoring the progress of the amplification reactions; c) determining the minimum time during which extension phase of the amplification is completed within each reaction mixture and relating that to the length of the sequence undergoing extension. The method, combined with melting point analysis, will allow percentage GC content of a sequence to be determined. Length analysis of this type can be used in diagnosis or analysis as well as in recombinant DNA technology to check for the presence of concatamers, and in taxonomic classification or forensics. Apparatus for use in the method is also described and claimed.
    • 一种确定核酸内特定区域的长度的方法,所述方法包括:a)使所述核酸样品经受其中扩增所述区域的多个扩增反应,其中每个 反应是多种多样的; b)监测扩增反应的进展情况; c)确定在每个反应混合物内完成扩增的延伸期的最短时间,并将其与经历延伸的序列的长度相关联。 该方法与熔点分析相结合,可以确定序列的GC含量百分比。 这种类型的长度分析可用于诊断或分析以及重组DNA技术,以检查连接体的存在,以及分类分类或取证。 还描述并要求保护该方法中使用的装置。
    • 8. 发明申请
    • Fluorescence-Based Detection Methods and Apparatus
    • 基于荧光的检测方法和装置
    • US20080290292A1
    • 2008-11-27
    • US12095444
    • 2006-12-11
    • David James SquirrellMartin Alan Lee
    • David James SquirrellMartin Alan Lee
    • G01J1/58
    • G01N21/6428G01N21/645G01N2021/6419G01N2021/6421G01N2021/6432G01N2021/6441G01N2201/0691
    • In apparatus for detecting the emission of fluorescent radiation from a sample in response to excitation by two or more different radiation sources (145, 160) over the same time period, each radiation source (145, 160) is imprinted with a modulation regime which can then be separately detected in the emitted fluorescent radiation. For instance in techniques based on fluorescent resonant energy transfer (“FRET”), the drive current to two or more different LED sources (145, 160) may be frequency modulated, or pulse width modulated, according to different modulation regimes. Responses of the sample, for instance of different donor/acceptor probes contained in the sample, to each of the sources (145, 160) can then be separately detected by means of the different modulation regimes, even where the wavelengths or wavelength ranges of the responses are the same or overlapping.
    • 在用于响应于两个或更多个不同的辐射源(145,160)在相同时间段的激发来检测来自样品的荧光辐射的发射的装置中,每个辐射源(145,160)被印刷有调制方式,其可以 然后在发射的荧光辐射中单独检测。 例如,在基于荧光共振能量转移(“FRET”)的技术中,可以根据不同的调制方式对两个或更多个不同的LED源(145,160)的驱动电流进行频率调制或脉冲宽度调制。 然后可以通过不同的调制方式单独地检测样品(例如包含在样品中的不同施主/受体探针)到每个源(145,160)的响应,即使其中波长或波长范围 回应是相同或重叠的。