Antibodies are primarily<u> Y shaped proteins</u> which are <u>secreted by B lymphocytes (plasma cells specifically).</u> Antibodies are also known as immunoglobulins and provide us immunity. Apart from protein, carbohydrate is also present in antibodies. Antibodies <u>interact with antigens </u>which can be a pathogen or any other foreign molecule. The<u> interaction of antibody and antigen </u>leads to<u> antigen-antibody complex formation</u> which further leads to either <u>agglutination or precipitation reaction.</u> Due to agglutination or precipitation reaction, the <u>pathogen or foreign molecule is cleared from our body. </u>
There are <u>five types</u> of antibodies (immunoglobulins) named as <u>IgG, IgM, IgA, IgE and IgD.</u>
