ABSTRACT

An obsolete term for leukocyte common antigen (CD45).

TAB vaccine

An immunizing preparation used to protect against enteric fever. It is composed of

Salmonella typhi

and

S. paratyphi

A and B microorganisms that have been killed by heat and preserved with phenol. The bacteria used in the vaccine are in the smooth specific phase, and they also contain both O and Vi antigens. The vaccine is administered subcutaneously. Lipopolysaccharide from the Gramnegative bacteria may induce fever in vaccine recipients. If

S. paratyphi

C is added, the vaccine is referred to as TABC. If tetanus toxoid is added, it is referred to as TABT.

Tac