这个词是什么意思？
A condition due to deficiency in any member of the VITAMIN B COMPLEX. These B vitamins are water-soluble and must be obtained from the diet because they are easily lost in the urine. Unlike the lipid-soluble vitamins, they cannot be stored in the body fat.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D014804 · MeSH 2026。
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