Lymph Nodes

• Two basic functions:– Filtration – macrophages destroy microorganisms

and debris– Immune system activation – monitor for antigens

and mount an attack against them

Tonsils

• Two basic functions:– Filtration – Immune system activation – To trap bacteria and antigen and allow the body to

produce antibody againts them– Pertahanan pertama bagi antigen yang berasal

dari ingesti dan inhalasi