| 单词 | Vitamin B12 Deficiencies |
| 释义 | Vitamin B12 Deficiencies《英文msh词典》Vitamin B12 Deficiencies [入口词] Vitamin B12 Deficiencies [主题词] Vitamin B 12 Deficiency [英文释义] A nutritional condition produced by a deficiency of VITAMIN B 12 in the diet,characterized by megaloblastic anemia. Since vitamin B 12 is not present in plants,humans have obtained their supply from animal products,from multivitamin supplements in the form of pills,and as additives to food preparations. A wide variety of neuropsychiatric abnormalities is also seen in vitamin B 12 deficiency and appears to be due to an undefined defect involving myelin synthesis. (From Cecil Textbook of Medicine,19th ed,p848) |
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