Term: blood island hematopoietic stem cell
Name: blood island
Synonyms: blood islands, caudal hematopoietic tissue, posterior blood island, posterior ICM
Definition: Nests of developing blood cells arising late in the segmentation period from the intermediate mass, and located in the anterior-ventral tail, just posterior to the yolk extension.
Ontology: Anatomy Ontology [ZFA:0000094]

Name: hematopoietic stem cell
Synonyms: colony forming unit hematopoietic, hematopoietic progenitor cell, hemopoietic progenitor cell, hemopoietic stem cell, HSC
Definition: A stem cell from which all cells of the lymphoid and myeloid lineages develop, including blood cells and cells of the immune system.
Ontology: Anatomy Ontology [ZFA:0009014]