Question: what is the difference between basophils and mast cells?
Answer: Mast cells are very similar to basophil granulocytes (a class of white blood cells) in blood. Both are granulated cells that contain histamine and heparin, an anticoagulant. ... Basophils leave the bone marrow already mature, whereas the mast cell circulates in an immature form, only maturing once in a tissue site.