antigens and the corresponding antisera included both crude o antigens and purified lipopolysaccharide preparations , the common enterobacterial antigen from escherichia coli o14 , the vi antigen from citrobacter ballerup , the polyribose-phosphate antigen from haemophilus influenzae type b , and the crude teichoic acid antigen from staphylococcus aureus .
C0069180
o antigens
C0023810
lipopolysaccharide