06. Anti stuff

What are antigens?

Molecules recognised by lymphocytes in the immune system

Where are antigens?

On the surface of cells

What does the immune system recognise?

Identical antigens that your body’s cells will have

What will identical antigens that your body’s cells have be?

Recognised by the immune system

Where are foreign antigens?

On the surface of pathogens

What are on the surface of pathogens?

Foreign antigens

What do foreign antigens do?

Trigger an immune response

What happens when foreign antigens have been detected?

Lymphocytes produce specific antibodies which can take days

When do lymphocytes produce specific antibodies?

When foreign antigens have been detected

What do antibodies do?

Bind to specific foreign antigens causing pathogens to stick together which are easier for phagocytes to engulf and destroy

What do some pathogens produce?

Toxins which make you feel ill

How do lymphocytes deal with toxins?

Produce specific antitoxins to neutralise toxins