Answered

The immune system consists of the skin,
nose and nose hairs, tonsils, lymph, lymph
nodes, lymphatic vessels, lymphocytes
(white blood cells), spleen, and thymus.
The specific immune response plays a role
in fighting infection when which of the
following takes place?
White blood cells fail to neutralize a
pathogen.
O Phagocytes are produced in the bone
marrow.
O Bacteria are phagocytized by neutrophils.
O The skin's protective barrier is broken.