#agranulocytes

-- a type of white blood cell

-- two types

Lymphocytes -- round nucleus -- cytoplasm forms a thin ring around the nucleus -- 6 to 14 um in diameter

-- types of white blood cells

-- two types

Lymphocyte -- produces antibodies -- produces chemicals that destroy micro-organisms -- contribute to allergic reactions -- contribute to graft rejection -- regulate immune system

Monocyte -- phagocytic cell -- in the blood -- leaves the blood and becomes a macrophage

Macrophage -- a monocyte -- phagocytizes bacteria, dead cells, cell fragments, and other debris