这个词是什么意思？
An isoxazole derivative that inhibits dihydroorotate dehydrogenase, the fourth enzyme in the pyrimidine biosynthetic pathway. It is used an immunosuppressive agent in the treatment of RHEUMATOID ARTHRITIS and PSORIATIC ARTHRITIS.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D000077339 · MeSH 2026。
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