Antigens<span> are foreign particles, usually proteins, which are capable of generating an immune response in the body, a property known as immunogenicity. This immune response consists of specific </span>antibodies<span> which are generated by plasma cells as a result of exposure to a specific epitope presented by the </span>antigen<span>.</span>
They generally test for infections, changes in body tissue and organs, and they test for the presence of chemicals such as drugs or poisons.
Replication is the process by which a cell duplicates the DNA.
Yes it’s illegal to do that