“vitamin B12 deficiency”的概念、定义、翻译、参考文献-科学参考

单词	vitamin B12 deficiency
释义	vitamin B12 deficiency Encyclopedia 医学营养缺乏病释 vitamin B12 deficiency维生素B12缺乏病因维生素B12摄入不足或吸收利用障碍等引起的，以巨幼红细胞性贫血和亚急性脊髓联合变性为特征的营养缺乏病。
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