单词：xanthines
(xanthine 的第三人称 -s形式) n. 黄质, 黄嘌呤
[化] 黄嘌呤
[化] 黄嘌呤
-s form of xanthine
n. crystalline oxidation product of the metabolism of nucleoproteins; precursor of uric acid; found in many organs and in urine
n. crystalline oxidation product of the metabolism of nucleoproteins; precursor of uric acid; found in many organs and in urine