1994 84: 1587-1593 J Plum, M De Smedt, MP Defresne, G Leclercq and B Vandekerckhove thymic microenvironment Human CD34+ fetal liver stem cells differentiate to T cells in a mouse http://bloodjournal.hematologylibrary.org/site/misc/rights.xhtml#repub_requests Information about reproducing this article in parts or in its entirety may be found online at: http://bloodjournal.hematologylibrary.org/site/misc/rights.xhtml#reprints Information about ordering reprints may be found online at: http://bloodjournal.hematologylibrary.org/site/subscriptions/index.xhtml Information about subscriptions and ASH membership may be found online at: reserved. Copyright 2011 by The American Society of Hematology; all rights 900, Washington DC 20036. weekly by the American Society of Hematology, 2021 L St, NW, Suite Blood (print ISSN 0006-4971, online ISSN 1528-0020), is published For personal use only. by guest on July 15, 2011. bloodjournal.hematologylibrary.org From