NewslettersEndothelial Cell News Endoderm-Derived islet1-Expressing Cells Differentiate into Endothelial Cells to Function as the Vascular HSPC Niche in Zebrafish By Noshin Noorjahan - January 23, 2023 0 Scientists found that islet1 (isl1)-expressing cells were the progenitors of the venous endothelial cells that constituted the majority of the hematopoietic stem and progenitor cells (HSPCs) niche. [Developmental Cell] Full ArticleGraphical Abstract