The are formed in red bone marrow and then migrate to tissues throughout the body. these blood cells destroy parasitic organisms and play a major role in allergic reactions.

a. monocytes

Eosinophils

Explanation:

These are type of White blood cells W.B.C ,present almost 2% of white cells . About twice the size of red blood cells , Nucleus is bi lobed . They are often used for parasite attack , Inactivate inflammation and production of substances .

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