Secretes: Tissues
Type of immunity: Cell-mediated
Eosinophils
Definition: Releases chemicals that reduce inflammation, attacks certain
worm-type parasites
% of WBCs: 1–4%
Response: Inflammation response
Site of maturation: Red bone marrow
Location of mature cells: Blood, connective tissues, and lymphatic tissue
Secretes: Histamine, complement proteins, leukotrienes, kininsand
interferon
Type of immunity: Innate
Basophils
Definition: Releases histamine, which promotes inflammation; also
releases heparin, which prevents clot formation
% of WBCs: 0.5–1%
Response: Inflammation response
Site of maturation: Red bone marrow
Location of mature cells: Blood, connective and lymphatic tissue
Secretes: Histamine, complement proteins, leukotrienes, kinins and
interferon
Type of immunity: Innate
Monocytes (Macrophages)
Definition: Phagocytic cell in the blood that becomes a macrophage
within tissues, which phagocytizes bacteria, cell fragments, dead