B12

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B12 may refer to:

  • Vitamin B12, a water-soluble vitamin with a key role in the normal functioning of the brain and nervous system, and for the formation of blood

B12 or B-12 may also refer to:

Biology[edit]

  • IgG1-b12, an antibody against the HIV surface protein gp120 found in some long-term nonprogressors
  • HLA-B12, an HLA - B serotype

Entertainment[edit]

Transportation[edit]

Other uses[edit]