diff --git a/src/ontology/uberon-edit.obo b/src/ontology/uberon-edit.obo
index d314da4fe..1484f4c4a 100644
--- a/src/ontology/uberon-edit.obo
+++ b/src/ontology/uberon-edit.obo
@@ -224685,6 +224685,14 @@ relationship: dc-contributor https://orcid.org/0000-0002-4341-3265
 relationship: dc-contributor https://orcid.org/0000-0003-2804-127X ! Sanjay Jain
 property_value: dcterms-date "2024-08-28T16:10:50Z" xsd:dateTime
 
+[Term]
+id: UBERON:8700000
+name: aorta-gonad-mesonephros
+def: "A transient organ in the developing embryo composed of the dorsal aorta, developing gonads, and embryonic kidney. This structure is located in the embryonic mesoderm and serves as the primary site for the generation of definitive hematopoietic stem cells." [PMID:25686881, PMID:25749005, PMID:31813624]
+is_a: UBERON:0002050 ! embryonic structure
+relationship: dc-contributor https://orcid.org/0009-0005-7919-4905
+property_value: dcterms-date "2024-10-25T08:42:34Z" xsd:dateTime
+
 [Term]
 id: UBERON:8700001
 name: follicle associated epithelium