Antigen is
any foreign particle that elicits an immune response or that specifically binds
to an antibody or a T-cell receptor (often used as a synonym for immunogen).
Antibodies or immunoglobulins are
glycoproteins consisting of identical heavy chains and 2 identical light chains
that recognizes a specific epitope on an antigen and facilitates elimination of
that antigen.
Difference Between: Antigen & Antibody
No
|
 |
Antibodies (immunoglobulins)
|
1
|
Any foreign
substance that induce an immune response
|
Are glycoproteins
formed in the body for combating antigens
|
2
|
Antigens are
generally proteins but can be carbohydrates, lipids or nucleic acids
|
Antibodies are
proteins
|
3
|
Triggers the
formation of antibodies
|
Variable site has
the antigen binding domain
|
4
|
The region of the
antigen that interacts with the antibodies is called epitopes.
|
The variable region
of the antibody that specifically binds to an epitope is called paratope
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5
|
Antigens cause
disease or allergic reaction
|
Protects the system
by immobilisation or lysis of antigenic material
|