Identification of regenerative roadblocks via repeat deployment of limb regeneration in axolotls.

"all expression analysis data has been deposited at geo under the identifier gse103087 for release on september 30 2017."

"Competing interests The authors declare no competing financial interests."

"This work was supported by the NIH/NICHD (1DP2HD087953, J.L.W.; 1R03HD083434, J.L.W.), NIH/NIAMS (1R03AR068126, J.L.W.), Brigham and Women’s Hospital (J.L.W.), and the Paul G. Allen Family Foundation (J.L.W.). The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health. Research fellows were supported by the Howard Hughes Medical Institute Gilliam Fellowship (D.M.B.), the National Science Foundation Graduate Research Fellowship (R.M.) under Grant No. DGE1144152, the American Academy of Neurology Medical Student Summer Research Scholarship (S.B.), the Harvard Stem Cell Institute (J.M.F.), the Brigham Research Institute (A.G.S.), the Harvard College Program for Research in Science and Engineering (R.O.), and the Harvard College Research Program (A.Y.W.). We thank the Ambystoma Genetic Stock Center for breeding adults used to generate progeny for these studies and the Developmental Studies Hybridoma Bank for the WE3 antibody. We thank Mike Levin and Cliff Tabin for insightful discussion. We thank Rebecca Soto for aid with data analysis. We thank William Ye, Rui Qun Miao, Adam Gramy, Anna Guzikowski, Athylia Paremski, Janine Kopeski, Colleen Carmody, Samantha Furgason, and Soyisha Sylvain for animal care and Harvard Biopolymers for sequencing."