About the Authors

Seema Singh

Affiliation Center of Excellence in Stem Cell Biology and Regenerative Medicine, Maine Medical Center Research Institute, Scarborough, Maine, United States of America

Rakesh Verma

Affiliation Center of Excellence in Stem Cell Biology and Regenerative Medicine, Maine Medical Center Research Institute, Scarborough, Maine, United States of America

Anamika Pradeep

Affiliation Center of Excellence in Stem Cell Biology and Regenerative Medicine, Maine Medical Center Research Institute, Scarborough, Maine, United States of America

Karen Leu

Affiliation Affymax, Inc., Palo Alto, California, United States of America

R. Bruce Mortensen

Affiliation Affymax, Inc., Palo Alto, California, United States of America

Peter R. Young

Affiliation Affymax, Inc., Palo Alto, California, United States of America

Miho Oyasu

Affiliation Affymax, Inc., Palo Alto, California, United States of America

Peter J. Schatz

Affiliation Affymax, Inc., Palo Alto, California, United States of America

Jennifer M. Green

wojchd@mmc.org (DMW); jennifer_green@affymax.com (JMG)

Affiliation Affymax, Inc., Palo Alto, California, United States of America

Don M. Wojchowski

wojchd@mmc.org (DMW); jennifer_green@affymax.com (JMG)

Affiliation Center of Excellence in Stem Cell Biology and Regenerative Medicine, Maine Medical Center Research Institute, Scarborough, Maine, United States of America

Competing Interests

The authors have read the journal's policy and have the following conflicts: Dr. Leu, Dr. Mortensen, Dr. Young, Dr. Green and Dr. Schatz are employees at Affymax. This does not alter the authors' adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: SS RV AP KL RBM PRY MO PJS JMG DMW. Performed the experiments: SS RV AP KL RBM PRY MO PJS JMG DMW. Analyzed the data: SS RV AP KL RBM PRY MO PJS JMG DMW. Contributed reagents/materials/analysis tools: SS RV AP KL RBM PRY MO PJS JMG DMW. Wrote the paper: SS RV AP KL RBM PRY MO PJS JMG DMW.