History. 1  Among first inhabitants were the Penteka. 2  1849 Capt. Randolph Marcy, U. S. Army engineer passes through scouting out West Texas to California routes. 3  1858 The Texas legislature establishes Taylor County from Bexar and Travis counties. The county is named for Alamo defenders Edward, James, and George Taylor.
When an antibody attaches to an antigen, it helps the body destroy or inactivate the antigen. antigen âa substance or molecule that is recognized by the immune system. The antigen can be from foreign material such as bacteria or viruses.antiserum âa serum rich in antibodies against a particular microbe.nnate âan immune system function that is inborn and provides an all-purpose defense against invasion by microbes. interferon âa protein produced by cells that stimulates antivirus immune responses or alters the physical properties of immune cells.
The invading microbe or pathogen is called an antigen. It is regarded as a threat by the immune system and is capable of stimulating an immune response. Antigens are proteins that are found on the surface of the pathogen.Antigens are unique to that pathogen.The whooping cough bacterium, for example, will have different antigens on its surface from the TB bacterium. When an antigen enters the body, the immune system produces antibodies against it. type of white blood cell called a lymphocyte recognizes the antigen as being foreign and produces antibodies that are specific to that antigen. Each antibody has a unique binding site shape which locks onto the specific shape of the antigen.