Beginning with this issue of Nature Immunology, our readers may notice the addition of accession codes in some research articles. Like the accession numbers linked to microarray or proteomic data sets, these new codes will call up a trove of information relevant to the article in which they are embedded.

The University of California San Diego-Nature Signaling Gateway (http://www.signaling-gateway.org/) is supplying this additional data, specifically the 'Molecule Pages' found therein. All Molecule Pages contain abundant automated information pertinent to the genetic and structural properties of a specific molecule. Some even contain annotated information about the functional attributes, interacting partners and biological importance of a given molecule.

We direct Nature Immunology readers to the Molecule Pages relevant to a given article in an effort to provide an immediately accessible yet brief source of background information, alternative molecule names, technical sequence and proteomic data, in addition to carefully chosen references for additional reading. Although the general link to the Signaling Gateway—a mainstay of the left menu bar on the Nature Immunology homepage for some time now—is useful, the new in-article Molecule Page links will provide a more direct route to immediately relevant information. Although only the most avid readers are likely to be inclined to randomly browse the library of Molecule Pages, readers of a specific paper on a particular signaling molecule who would like more information can easily—with just a click of the link—be routed to more information about that specific molecule.

To ensure that this exchange of information is bidirectional, we will also be querying Nature Immunology authors and referees in the coming months to gauge their interest in contributing new entries to Molecule Pages that may be especially relevant to the articles they have written or reviewed. Much like a Review article, these Molecule Pages are peer reviewed and are assigned citation-friendly 'digital object identifier' numbers, and authors can work alone or collaborate with colleagues toward their completion.

In sum, with this initiative we aim to simultaneously direct Nature Immunology readers toward useful information and increase the wealth of material pertinent to immunology available to both immunologists and nonimmunologists who venture to the Signaling Gateway. We welcome your feedback and comments.