it appears that the antigens which sensitize tanned erythrocytes and diffuse through agar gels are present in both smooth and rough forms and may be situated in the cytoplasm or in the internal part of the cell wall , whereas the agglutinogen and the antigen which attaches to normal erythrocytes are surface antigens found only on the smooth brucella cell .
C0010834
cytoplasm
C0007634
cell