The Second Line of Defence

Flussdiagrammknoten

• A pathogen attacks the body.

• Phagocytosis A phagocyte cell finds the foreign body, swallowing and digesting it

• A lymphocyte cell is alerted and produces antibodies specific to the foreign body

• The lymphocyte becomes a Memory Lymphocyte, "remembering" how to deal with the specific pathogen.

• Antibodies stick to the pathogens, making them easier to destroy.

• Pathogen is New

• Pathogen has infected the body before

• Memory Lymphocytes create Antibodies specific to the pathogen

• Pathogen is Destroyed

• Each pathogen has a different set of Antibodies that can be memorised by the lymphocytes