Oligosaccharides

• Type a


  have A antigens and carry anti b antibodies
• Type B


  carry b antigens, carry anti A antibodies
• type AB


  have both A and B antigens. neither carry anti A nor anti B antibodies
• type O 


  bear neither antigen and carry both anti A and anti B antibodies
• Transfusion of type A and B results in an anti-A antibody A antigen reaction, that agglutinates (clumps) the transfused erythrocytes. resulting in fatal blockage of blood vessels
• Bacteria


  often found growing on the surfaces as a biofilm, an association of cells in a semisolid matrix
• biofilm 


  consists of highly hydrated plusaccharodes sich as anionic poly-D-glucuronate, poly-N-acetylglucosamine, cellulose like molecules and acetylated glycans