Antihemophilic factor A

Antihemophilic factor A: Factor VIII

Antigen

Antigen: A kind of substance that increases the production of antibodies. They are also called as immunogen. A protein molecule present on the surface of the cell, bacterium or some virus involved in activating the synthesis of an antibody.

Antibody

Antibody: It is a particular type of protein (immunoglobulin molecule) synthesized by B-cell involved in primary immune responses to a disease. These are produced in reaction to the presence of antigens such as bacterium or virus.

Antecedent

Antecedent: Somebody’s precursor or ancestor.

Anorexia

Anorexia: It is an appetite loss which is persistent.

Ankylosing spondilitis

Ankylosing spondilitis: This is the arthritis of the spine in which there is fusion of the spine.

Angioedema

Angioedema: Repeating form of subcutaneous painless swelling which is localized.