b

The blood group whose red cells carry the B antigen.

(physics) a unit of nuclear cross section; the effective circular area that one particle presents to another as a target for an encounter.

Originally thought to be a single vitamin but now separated into several B vitamins.

Aerobic rod-shaped spore-producing bacterium; often occurring in chainlike formations; found primarily in soil.

A trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder.

A logarithmic unit of sound intensity equal to 10 decibels.

The 2nd letter of the Roman alphabet.