B12 (disambiguation)

Vitamin B12 is 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:

Music

Transportation

Other uses

See also

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