Depends on its date. There are no rare JFK halves. You might get $4 from a dealer for a 1964 one because they're 90% silver, $1.50 for a 40% silver one minted from 1965 to 1 â¦ 970. Anything newer is copper-nickel and has no added value. 2 people found this useful.
An antibody, also known as an immunoglobulin, is a protein found in the blood or body fluid of an animal.These proteins have special receptors that allow them to bind to foreign substances known as antigens.Their purpose is to identify and neutralize antigens so that they cannot make the host organism sick.n antibody, also known as an immunoglobulin, is a protein found in the blood or body fluid of an animal.
An antigen is a foreign particle that enters the body. This could be a disease causing agent such as part of a bacterium or virus or could be a particle such as pollen or dust â¦ . An antibody is a protein made by the body's immune system.