Correction: Toll-Like Receptor Signaling in Vertebrates: Testing the Integration of Protein, Complex, and Pathway Data in the Protein Ontology Framework.

A grant number is missing in the Funding section. The correct funding information is as follows: The project is supported by the National Institutes of Health grants 5R01GM080646-09 and HHSN272201000053C (www.nih.gov). The funder had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.