Figure 2 RRIDs found in the published literature. A. Google scholar result for the anti-tyrosine hydroxylase antibody RRID (9/2014; http://scholar.google.com/scholar?q=RRID:AB_90755). B. Shows the most used RRIDs in the first 100 papers, by number of papers using the identifier. All data is available in Supplementary Table 1 and all identifiers can be accessed in google scholar. The total number of research resources reported in the first 100 papers of the Resource Identification Initiative was determined by manual inspection of each paper by two independent people. A google scholar alert was used to track all new papers that contained the term RRID. Each paper was downloaded and examined for the snippets of text surrounding research resources (methods or data use sections). Each snippet of text surrounding the RRID was copied and pasted into a shared document (Supplemental Table 1). The RRID was then checked against the scicrunch resolving service (for example https://scicrunch.org/resolver/RRID:AB_262044) to determine what the source database lists about the resource. Information was compared in the following way: if the vendor/catalog number was present in the snippet and these matched the resolver data, we considered that the record was marked accurate, if no information about the catalog number was present in the paper, but the antibody target or clone number matched then the record was also marked accurate, but if the vendor/catalog number information was different from the database record or no other information could be found about the reagent, then the record was marked inaccurate. The total accuracy is primarily therefore based on the catalog number match and importantly does not reflect any upstream problems with organism or reagent identification inside of the laboratories themselves.