Abstract: A system in which researchers can freely and effectively use worldwide bioinformatics analysis programs available on the Internet is provided. When a bioinformatics analysis program available on the Internet is used by a user computer, a broker program is used. The broker program has a function of absorbing differences in input/output format between analysis programs, and each analysis program is provided with the broker program. A broker program-providing server stores various broker programs provided by users and makes them available to the public. When the user uses bioinformatics analysis programs available on the Internet, the user can use broker programs that are made available by the broker program-providing server and that are created by other users.

Abstract: A system in which researchers can freely and effectively use worldwide bioinformatics analysis programs available on the Internet is provided. When a bioinformatics analysis program available on the Internet is used by a user computer, a broker program is used. The broker program has a function of absorbing differences in input/output format between analysis programs, and each analysis program is provided with the broker program. A broker program-providing server stores various broker programs provided by users and makes them available to the public. When the user uses bioinformatics analysis programs available on the Internet, the user can use broker programs that are made available by the broker program-providing server and that are created by other users.

Abstract: In gene expression analysis using DNA chips, the position of a probe on a genome sequence, candidates for splice variants, and the like are displayed in relation to one another. Information on the position of the probe designed for a DNA chip system on the genome sequence is retrieved by connecting to an external database and a server that manage sequence information (genome sequence, mRNA, EST, etc.) and annotation information of various organisms. Further, homologous sequences of a gene for which the probe was designed are detected by homology search program, and the candidates for splice variants obtained from the search are stored in a DNA chip database in relation to expression data.