Without doubt, the PGA European Tour is the second most important tour in menâs golf, behind the PGA Tour. When it comes to prize money, its harder to predict the European Tourâs standing in comparison to the PGA Tour, and whether it has fallen or risen in the past few years.
An antigen is a molecule that binds to Ag-specific receptors, but cannot necessarily induce an immune response in the body by itself. Antigens are usually peptides, polysaccharides or lipids.
An antibody is a protein used by the immune system to identify and neutralise foreign objects like bacteria and viruses. Each antibody recognises a specific antigen unique to its target. Production of antibodies is referred to as the humoral immune system.he part of the antigen that antibody binds to is called the antigenic determinant, antigenic site or epitope. A given organism contains many different antigens. Viruses can contain as few as three (polyoma virus) to more than 100 (herpes and pox), whereas protozoa, fungi and bacteria contain hundreds to thousands.