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recognition proteins are used by white blood cells for what purpose
what kind of white blood cells are there
There are five major types of white blood cells: neutrophils, lymphocytes, eosinophils, monocytes, and basophils.
why is the number of white blood cells important
Having a higher or lower number of white blood cells than normal may indicate an underlying condition.
what is the white blood cell count used for
A white blood cell count can detect hidden infections within your body and alert doctors to undiagnosed medical conditions, such as autoimmune diseases, immune deficiencies, and blood disorders.

Question: why are the cells called white
Self-contained rewrite: why are white blood cells called white