Fan fiction, also called fanfiction, is derivative fiction written using another author's characters and universe. Fanfiction authors write stories about their favorite characters from books, movies, or comics.
Antibodies, also called immunoglobulins, are proteins manufactured by the body that help fight against foreign substances called antigens. When an antigen enters the body, it stimulates the immune system to produce antibodies. (The immune system is the body's natural defense system.) The antibodies attach, or bind, themselves to the antigen and inactivate it. Every healthy adult's body has small amounts of thousands of different antibodies.
The bodyâs defense against various microorganisms that cause disease and illness is the immune system. The immune system attacks these disease causing organisms through a sequence of steps referred to as the immune response.The immune system is composed of a number of cells, tissues and organs that work in association and attacks the disease causing microorganisms and protect the human body.The cells of the immune system are the leukocytes or the white blood cells.ence, the functioning of the immune system occurs in a coordinated manner, thereby, monitoring the body against disease causing germs and microorganisms. Leukocytes are divided into two main types as: phagocytes and lymphocytes. 1  Phagocytes.