Which type of white blood cells are concerned with the release of histamine and the natural anticoagulant heparin?

Step-by-step solution

The basophils are probably like mast cells of connective tissue. They release heparin, histamine and serotonin. Their nucleus is usually three lobed and their granules take basic stain strongly. Monocytes are largest of all types of leucocytes. Their nucleus is bean-shaped. They are motile and phagocytic in nature. They engulf bacteria and cellular debris. Generally, they will change into macrophages after entering tissue spaces. Eosinophils have two-lobed nucleus. They are non-phagocytic and help in dissolving blo