About the Authors
Department of Animal Biology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
BiogenIdec, Cambridge, Massachusetts, United States of America
Authors declare no COI except for D.P. Baker, who is employed by BiogenIdec, Inc., and owns the stock.
Conceived and designed the experiments: JQ WH JL SYF. Performed the experiments: JQ HZ WH JL CJC NAL. Analyzed the data: JQ HZ DPB SYF. Contributed reagents/materials/analysis tools: DPB. Wrote the paper: JQ DPB SYF.