摘要:
Methods are disclosed for selecting a combination of nucleic acid sample pairs for evaluating the ability of an oligonucleotide probe to measure differential expression of genes. Differential gene expression experiments are conducted using (i) nucleic acid sample pairs and (ii) nucleic acid probes immobilized on a substrate, the probes representing a set of genes. The number of genes in the set is a portion of an expected number of genes in a sample. A nucleic acid sample pair combination is selected based on the members of the combination having a maximized number of genes from the set of genes that exhibit differential expression and a minimized number of the genes that do not exhibit differential expression.
摘要:
A method of uniformly draining liquid from a patterned surface using a flow cell is provided. The method may be employed in a variety of applications, including in chemical array fabrication. In an exemplary embodiment, the invention provides an apparatus for fabricating a chemical array that employs a flow cell. Methods of fabricating a chemical array that employ the subject apparatus and drainage methods are also provided. Also provided are the arrays produced using the subject methods, as well as methods for using those arrays.
摘要:
Methods of producing nucleic acid arrays using an in situ nucleic acid synthesis protocol are provided, where the in situ nucleic acid synthesis protocol includes a plurality of cycles, each of which includes: (I) a monomer attachment step; and (II) a functional group generation step. A feature of the subject methods is that the functional group generation step is performed by sequentially flowing a plurality of different fluids across the surface of a substrate in a manner such that the surface is not contacted with a with a triple phase interface line. Also provided are the arrays produced using the subject methods, as well as methods for use of the arrays and kits that include the same.
摘要:
A multi-dimensional chemical-analysis system includes a longitudinally extending iso-electric focusing (IEF) channel and transversely extending high-pressure liquid chromatography (HPLC) channels. Piezo-electric pumps force sample fluid from the IEF channel to form jets as it exits through respective pump nozzles. The jets then enter the HPLC channels for parallel second-dimension separations. Alternatively, the jets can be used to “print” sample onto a moving medium to provide a two-dimensional time-vs.-band-position distribution of sample components.