Leucocytes/ white blood cells

Posse a nucleus

Fewer in number

Longer in size - 8 to 15 micrometers

Normal counts - 6000 to 11000

Two main varieties

Granular/ Poly nuclear

Neutrophils -70%

Eosinophils - 4%

Basophils -1%

Non granular/mono nuclear

Lymphocytes -23%

Monocytes - 2%

Provide the body with a defend against invading infections