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Monocytes - Secrete heparin
Eosinophils - Allergic response
Basophils - Secrete histamine and serotonin
Neutrophils - Phagocytic and eat foreign organisms
Monocytes - Secrete heparin
Monocytes are leucocytes which are motile and phagocytic in nature and engulf bacteria and cellular debris. Basophils secrete heparin, serotonin and histamine.