释义 |
DictionarySeeislandblood island
blood island[′bləd ‚ī·lənd] (embryology) One of the areas in the yolk sac of vertebrate embryos allocated to the production of the first blood cells. blood island
blood is·landan aggregation of splanchnic mesodermal cells on the embryonic yolk sac, with the potentiality of forming vascular endothelium and primordial blood cells. Synonym(s): blood isletA primitive mesenchymal tissue that develops into bone marrow and blood vesselsblood islandThe early collections of cells in the embryo that give rise to blood and blood-forming organs later in life. See also: islandFinancialSeeIsland |