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Descriptor English:   Vitamin B 12 Deficiency 
Descriptor Spanish:   Deficiencia de Vitamina B 12 
Descriptor Portuguese:   DeficiÍncia de Vitamina B 12 
Synonyms English:   Deficiencies, Vitamin B12
Deficiency, Vitamin B 12
Deficiency, Vitamin B12
Vitamin B12 Deficiencies
Vitamin B12 Deficiency  
Tree Number:   C18.654.521.500.133.699.923
Definition English:   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) 
Indexing Annotation English:   coord IM with specific B 12 vitamin /defic (IM); DF: VITAMIN B 12 DEFIC
Allowable Qualifiers English:  
BL blood CF cerebrospinal fluid
CI chemically induced CL classification
CO complications CN congenital
DI diagnosis DG diagnostic imaging
DH diet therapy DT drug therapy
EC economics EM embryology
EN enzymology EP epidemiology
EH ethnology ET etiology
GE genetics HI history
IM immunology ME metabolism
MI microbiology MO mortality
NU nursing PS parasitology
PA pathology PP physiopathology
PC prevention & control PX psychology
RT radiotherapy RH rehabilitation
SU surgery TH therapy
UR urine VE veterinary
VI virology  
Record Number:   16591 
Unique Identifier:   D014806 

Occurrence in VHL: