a rock formation, usually of limestone or sandstone, containing large amounts of bitumens.
aspan American Society of PeriAnesthesia Nurses
- Asparaginic acid
an enzyme that catalyzes the conversion of to aspartic acid and ammonia, used in the treatment of acute lymphocytic leukemia. asparaginase as·par·a·gin·ase (ə-spār’ə-jə-nās’, -nāz’) n. A bacterial enzyme that catalyzes the hydrolysis of asparagine and is used in the treatment of leukemia.
a white, crystalline, amino acid, NH 2 COCH 2 CH(NH 2)COOH, soluble in water, obtained from certain plants, especially legumes, and used chiefly as a nutrient in culture media for certain bacteria. Symbol: N. Abbreviation: Asn; Historical Examples The diuretic action is extremely feeble, and neither the plant nor asparagine is now used medicinally. Encyclopaedia […]