lymphocytes
- Created by: kenneyn14
- Created on: 04-04-19 13:42
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- Lymphocytes
- T-Lymphocytes
- Destroy body cells infected by a pathogen by recognising antigens of the pathogen on the cells membrane
- Attach to infected cells and release proteins
- These proteins diffuse into the infected cells causing the production of self-destructive enzymes which cause cell death
- This programmed cell death is called apoptosis
- The remains of the cell are then engulfed and removed by phagocytosis
- These proteins diffuse into the infected cells causing the production of self-destructive enzymes which cause cell death
- Can usually distinguish between Self-antigens and Non-Self antigens
- Sometimes failure in an immune system leads to T-Lymphocytes launching an attack on 'self' antigens
- This is called auto-immunity and is the cause of autoimmune diseases
- Sometimes failure in an immune system leads to T-Lymphocytes launching an attack on 'self' antigens
- B-Lymphocytes
- produce specific anti-bodies against antigens and this leads to the destruction of the pathogen
- An antibody is a Y-shaped molecule that has a receptor binding site specific to a particular antigen on a pathogen
- When antibodies bind to an antigen they form an 'antigen-antibody complex' and inactivate the pathogen
- The 'antigen-antibody complex' can then be destroyed by phagocytes
- When antibodies bind to an antigen they form an 'antigen-antibody complex' and inactivate the pathogen
- An antibody is a Y-shaped molecule that has a receptor binding site specific to a particular antigen on a pathogen
- can respond to antigens on harmless antigens
- This can cause hypersensitive response in the form of an exaggerated immune resonse - allergic reaction
- produce specific anti-bodies against antigens and this leads to the destruction of the pathogen
- A type of white blood cells involved in the specific immune response
- Produced in bone marrow
- T-Lymphocytes
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