Pathogens have antigens, which are chemicals that are foreign to the body.
Lymphocytes are a type of white blood cell, which can produce antibodies specific to a pathogen's antigen.
Antibodies lock onto the pathogen's antigens and kill or damage the pathogen.
Antibodies can also coat pathogens so they clump together. This makes it easier for a phagocyte (another type of white blood cell) to…