The Antibody Registry supports the RRID Initiative and exists to give researchers a way to universally identify antibodies used in publications. The registry lists many commercial antibodies from over 200 vendors, which have been assigned a unique identifier and over 2000 individual laboratories. If the antibody that you are using does not appear in the list, an entry can be made by filling in as little as 2 pieces of information: the catalog number and the url of the vendor where our curators can find information and material data sheets.