part of part of develops from develops from tissue hematopoietic system anterior lateral plate mesoderm rostral blood island Hematopoietic tissue derived from the cephalic mesoderm. Predominantly produces myeloid cells. de Jong and Zon 2005. RBI This class was sourced from an external ontology (teleost_anatomy). Its definitions, naming conventions and relationships may need to be checked for compatibility with uberon UBERON:2005029 ZFA:0005029