| Name: | caudal hematopoietic tissue | 
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| Synonyms: | |
| Definition: | Tissue that lies between the caudal artery and the caudal vein plexus where definitive hematopoiesis occurs after 48hpf and before the hematopoietic progenitors migrate to the thymus and kidney. | 
| Ontology: | Anatomy Ontology [ZFA:0005898] | 
| Name: | vasculature | 
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| Synonyms: | |
| Definition: | Is an interconnected tubular multi-tissue structure that contains fluid that is actively transported around the organism. | 
| Ontology: | Anatomy Ontology [ZFA:0005249] |