27. Functions of antibodies. Functions of the different classes of immunoglobulins. Antibody-based hypersensitivity reactions.

Question 1

Antigens - effectors of the immuno response

Answer 1

• called immunoglobulins. lg are glycoproteins that react with antigens
• at first antibodies are on the surface of the lymphocyte, they undergo clonal selection
• antibodies fall into S classes depending on the type of heavy chain
  -> IgG, IgM, IgA, IgE, IGd (I is capital i)

Question 1

Functions of antibodies

Answer 1

• neutralization
• opsonization
• inflammation

1. antigen recognition
2. disposal of toxins: antitoxins bind to toxins active site, destroying active site
3. Isolation of the pathogen from its toxins
   - binding of antibody to antigen. prevents cells
4. indirect effect of antigen binding