Estrogen defines the dorsal-ventral limit of VEGF regulation to specify the location of the hemogenic endothelial niche

Kelli J. Carroll, Virginie Esain, Maija K. Garnaas, Mauricio Cortes, Michael C. Dovey, Sahar Nissim, Gregory M. Frechette, Sarah Y. Liu, Wanda Kwan, Claire C. Cutting, James M. Harris, Daniel A. Gorelick, Marnie E. Halpern, Nathan D. Lawson, Wolfram Goessling, Trista E. North