12 - Benefits Sources Vitamin B12 12 Vitamin B12 Benefits . . Sources 12 : ߡ ȡ . Quantity (6 4 ): 0.9 . : 2.4 . : 2.4 . : 2.4 . : 2.4 . : 2.6 . Symptoms of deficiency . ȡ . . ѡ . . . . .
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