somatic antigen

so·mat·ic an·ti·gen

an antigen located in the cell wall of a bacterium in contrast to one in the flagella (flagellar antigen) or in a capsule (capsular antigen).

so·mat·ic an·ti·gen

(sō-mat'ik an'ti-jen) An antigen located in the cell wall of a bacterium in contrast to one in the flagella (flagellar antigen) or in a capsule (capsular antigen).