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Neutrophils
granulocyte
fine granules that stain light purple
2-5 lobes in nucleus
54-62% of all WBCs
mobile and phagocytic, eating small invaders
Eosinophils
coarse, uniformed size granules - stain deep red
2 lobed nucleus
1-3% of WBC's
slightly phagocytic, attracted to parasites
help reduce inflammation and allergic reactions by removing the chemicals causing them
basophils
few irregular shaped granules- stain deep blue
<1% of all WBC's
secrete "heparin" helps prevent blood clots
secrete "histamine" increases blood flow to injured areas
Monocytes
agranulocytes
largest of blood cells, 2-3X diameter of RBC
nuclei may be round, oval, kidney-shaped, or lobed. 3-9% of WBC's
lifespan range weeks-months
mobile and phagocytic eating large particles
lymphocytes
slightly larger than RBC
contains large round nucleus
25-33% of WBC
live for years
produce antibodies necessary for immunity
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