BAIER: Now, does Secretary Clinton factor into this? SCHWEIZER: For that deal to go through, it needs federal government approval and one of those people that has to approve that deal is Secretary of State Hillary Clinton.
An antigen is any foreign substance which invades the body of an organism, while a pathogen is a living antigen (such as viruses or bacteria) which invade an organism. Many different kinds of white blood cells exist which are able to help the body fight foreign invaders in various ways.
Transduction is the insertion of foreign DNA into a cell via a virus (See Reference 1 and 2). Viruses are made of a protein coat that houses DNA within. Viruses can bind to living cells and inject their DNA.