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vitamin B12

noun [U]
 
 
/ˌvɪt.ə.mɪnˌbiːˈtwelv/ US  /ˌvaɪ.t̬ə-/

Definition

a vitamin found in foods such as liver, kidney, eggs, fish, and milk, important for a healthy nervous system, normal growth, and the production of red blood cellsVitamins and minerals
(Definition of vitamin B12 noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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