Fig. (5) Profile of protein bands of S. mutans. Lane 1: S. mutans isolated from caries-free subject (control), Lane 2: S. mutans isolated from caries subject after incubation with IgY anti S. mutans ComD, M : Marker, Lane 4: protein band from S. mutans isolated from caries-free subject after incubation with IgY anti S.mutans, Lane 5: S. mutans isolated from Caries subject (control).