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| Symbol: Dy; atomic weight: 162.50; atomic number: 66 |
| Symbol: Tb; atomic number: 65; atomic weight: 158.924 |
heparin hep·a·rin (hěp'ər-ĭn)
n.
A complex organic acid that is found especially in lung and liver tissue, has a mucopolysaccharide as its active constituent, prevents platelet agglutination and blood clotting, and is used in the form of its sodium salt in the treatment of thrombosis.
| heparin (hěp'ər-ĭn) Pronunciation Key
An acidic glycosaminoglycan found especially in lung and liver tissue that prevents the clotting of blood and is used intravenously in the treatment of thrombosis and embolism. |