The Second Line of Defence

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