Home page of the National Human Genome Research Institute, the arm of the U.S. National Institutes of Health dedicated to advancing human health through genetic research.

Pathguide: The Pathway Resource List, provided by the Computational Biology Center at Memorial Sloan-Kettering Cancer Center (MSKCC) aims to provide a comprehensive catalog of biological pathway resources available on the internet. Pathguide is a spin-off project of the BioPAX effort (http://www.biopax.org).

GeneGo offers state-of-the-art gene expression pathway analysis software and bioinformatics solutions for systems biology research and development around the globe.

Ingenuity Systems offers IPA software for pathway analysis of microarray and gene expression data – try a free trial. IPA, Ingenuity Answers, and other scientific tools from Ingenuity help with genomic and disease research. They leverage the Ingenuity Knowledge Base to provide insight on biological systems and chemical systems, including genes, pathways, networks, functions, and diseases, to better understand disease mechanism, Metabolomics, toxicity, biomarkers, and more.

Invitrogen enables scientific discovery by offering the broadest range of tools for life science. Its innovative reagents are used in all major areas of biological discovery including functional genomics, proteomics, stem cells, cell therapy and cell biology.

Tom Sawyer Software is the premier provider of data visualization software that enables you to see and interpret complex data to make better decisions.