human_reference_atlas
has part
fibroblast
Homo sapiens
anal canal
organ component layer
adventitia
http://upload.wikimedia.org/wikipedia/commons/e/e8/Illu_esophageal_layers.jpg
SCTID:30180000
tunica externa
MESH:D063194
adventitia
An outermost connective tissue covering of an organ, vessel, or other structure[WP].
Wikipedia:Adventitia
BTO:0002010
UBERON:0005742
FMA:45635
AS
tunica advetitia
adventitia
uberon