In microbiology, O antigen renders additional protection from the antimicrobial action of certain antibiotics. Without it, the LPS becomes hydrophobic and therefore is more susceptible to the action of hydrophobic antibiotics. 1
In immunology, blood types are determined by the presence of blood-group antigens. In humas, there are three types of blood-group antigens, namely H antigen, A antigen, and B antigen. They differ basically on structural component.
- (microbiology) O polysaccharide
- (microbiology) O side-chain
- 1Tsujimoto H et al. (2003). "Diffusion of macrolide antibiotics through the outer membrane of Moraxella catarrhalis". Journal of Infection and Chemotherapy 74 (4): 1045–1055. doi:10.1007/s101569900025