B12

from Wikipedia:

B12 most often refers 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:

Alpina B12, a car model by German manufacturer AlpinaB12 (band), a British electronic music duoB12 student model clarinet manufactured by Buffet CramponB12 (New York City bus) serving BrooklynBensen B-12, a 1961 American unconventional aircraftBrandon C. Rodegeb (born 1977), American music executive, film-maker, rap artist, writer known as B12Caro-Kann Defence, a common opening in the game of chessChery B12, a 2007 Chinese Chery Automobile modelGp120#gp120_vaccines, an antibody against the HIV surface protein gp120 found in some long-term nonprogressorsLNER Class B12, a class of steam railway locomotiveQueensland B12 class locomotive, a class of steam railway locomotiveHLA-B12, an HLA - B serotype

and also :

Nissan Sunny, a car model by Japanese manufacturer Nissana modified version of the B-10 bombera song by the now-defunct grunge band, Grey Daze