Granulocytes include basophils, eosinophils, neutrophils, and mast cells. Myeloid cells include monocytes, macrophages, neutrophils, basophils, eosinophils, erythrocytes, and megakaryocytes to platelets. The granulocytes are neutrophils, eosinophils, basophils, and mast cells. The VCAM-1 protein mediates the adhesion of lymphocytes, monocytes, eosinophils, and basophils to vascular endothelium. GM-CSF stimulates stem cells to produce granulocytes (neutrophils, eosinophils, and basophils) and monocytes. IL-3 stimulate the production of neutrophils, monocytes, eosinophils, basophils, and platelets, respectively. In this category are neutrophils, mast cells, basophils, and eosinophils. Neutrophils, along with eosinophils and basophils, make up the category of granulocytes. CCL2 exhibits a chemotactic activity for monocytes and basophils. CD32B is also found on basophils, neutrophils, monocytes, and macrophages. They form part of the polymorphonuclear cell family (PMNs) together with basophils and eosinophils. Histamine is a small molecule, stored in granules of mast cells and basophils. It also causes histamine release in human basophils. Heparin is produced by basophils and mast cells in all mammals. Along with mast cells and basophils, they also control mechanisms associated with allergy and asthma.