The reform legislature passed the Stetson-Eshelman Act, which increased the state Railroad Commissionâs authority and power to fix passenger and freight rates; thus ending Southern Pacific Railroadâs (SP) crushing monopolistic practices.
From Wikipedia, the free encyclopedia. In immunology, an antigen is a molecule capable of inducing an immune response on the part of the host organism, though sometimes antigens can be part of the host itself. In other words, an antigen is any substance that causes an immune system to produce antibodies against it.
In most cases, an antibody can only bind one specific antigen; in some instances, however, antibodies may bind more than one antigen. 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.