what are pathogens ?
A pathogen, in the oldest and broadest sense, is any organism that can produce disease. A pathogen may also be referred to as an infectious agent, or simply a germ.
Pathogen
In biology, a pathogen ( "pathos" "suffering", "passion" and -γενής "-genēs" "producer of") in the oldest and broadest sense, is any organism that can produce disease. A pathogen may also be referred to as an infectious agent, or simply a germ.
what is the role of antibodies in the immune system An antibody is used by the immune system to neutralize pathogens such as pathogenic bacteria and viruses. what are their forms ? The membrane-bound form of an antibody may be called a "surface immunoglobulin" (sIg) or a "membrane immunoglobulin" (mIg). what are their structures ? The size of an antibody molecule is about 10 nm. They have sugar chains (glycans) added to conserved amino acid residues. how are they used in disease therapy ? The diseases are often treated by inducing a short term form of immunity called passive immunity. how are they used in  prenatal therapy ? Anti-RhD antibodies are administered as part of a prenatal treatment regimen to prevent sensitization that may occur when a Rh-negative mother has a Rh-positive fetus.
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Pathogen [SEP] Introduction
In biology, a pathogen ( "pathos" "suffering", "passion" and -γενής "-genēs" "producer of") in the oldest and broadest sense, is any organism that can produce disease. A pathogen may also be referred to as an infectious agent, or simply a germ. The term "pathogen" came into use in the 1880s. Typically, the term is used to describe an "infectious" microorganism or agent, such as a virus, bacterium, protozoan, prion, viroid, or fungus. Small animals, such as certain kinds of worms and insect larvae, can also produce disease. However, these animals are usually, in common parlance, referred to as parasites rather than pathogens.