title: Evolutionary significance of the thoracic duct.
mesh_terms: D000663:Amphibians; D000818:Animals; D005075:Biological Evolution; D001794:Blood Pressure; D002685:Chiroptera; D005110:Extracellular Space; D005399:Fishes; D000882:Haplorhini; D008208:Lymphatic System / Q000502:physiology*; D010828:Physiology, Comparative; D012104:Reptiles; D013897:Thoracic Duct; D014680:Veins; D004490:Xenarthra