1.Nature 446, 1056-1061 (26 April 2007) | doi:10.1038/nature05725; Received 15 June 2006; Accepted 2 March 2007; Published online 21 March 2007 8 U& }( {7 O: P3 h8 cCell tracing shows the contribution of the yolk sac to adult haematopoiesis* _: {/ [5 \5 `- h* J. @/ H1 M
Igor M. Samokhvalov1, Natalia I. Samokhvalova1 & Shin-ichi Nishikawa18 O1 y* B, ~. J! E2 L http://www.nature.com/nature/jou ... ll/nature05725.html