Additions and Corrections| Volume 286, ISSUE 27, P24534, July 08, 2011

Endocannabinoids are expressed in bone marrow stromal niches and play a role in interactions of hematopoietic stem and progenitor cells with the bone marrow microenvironment.

Open AccessPublished:July 08, 2011DOI:
      VOLUME 285 (2010) PAGES 35471–35478
      This article has been withdrawn by the authors.