The Immune System

The immune system

A) includes secondary lymphoid organs such as Peyer's patches and the adenoids.
B) mounts the strongest immune response at the site of infection although the cells, debris and antigens from this site are eventually carried by the lymphatic vessels to the local lymph nodes where they are simply filtered.
C) mounts immune responses at primary lymphoid organs such as the lymph nodes, spleen and tonsils.
D) is dependent on lymphatic vessels to filter out foreign organisms and co-ordinate an organised response involving T-cells.
E) has secondary lymphoidal tissue that is recruited to an immune response only where an immune memory already exists as a result of a previous or primary infection.