N = commensal strains (AFEC), S = septicemia strains, H = swollen head syndrome strains, O = omphalitis strains. TraqM: adhesion to the trachea in the presence of D-mannose; TraqNM: adhesion to the trachea in the absence of D-mannose; HeLaM: adhesion to HeLa cells in the presence of D- mannose; HeLaNM: adhesion to HeLa cells in the presence of D- mannose; HEp-2M: adhesion to HEp-2 cells in the presence D- mannose; HEp-2NM: adhesion to HEp-2 cells in the absence of D- mannose.