Unlike motility in bacterial chemotaxis, the mechanism by which eukaryotic cells physically move is unclear. Cetirizine has been shown to inhibit eosinophil chemotaxis and LTB4 release. APC supports endothelial barrier function and reduces chemotaxis. Less operons related to chemotaxis results in limited motility. SUCNR1 is highly expressed on immature dendritic cells, where succinate binding stimulates chemotaxis. Finally, H plays roles in mast cell chemotaxis and cytokine production. The activated stellate cell is characterized by proliferation, contractility, and chemotaxis. Many factors produced by other cells can regulate the chemotaxis and other functions of monocytes. MCPs respond to extracellular attractants and repellents in bacteria like "E. coli" in chemotaxis regulation. Anti-cholinergics, decongestants, and other compounds thought to impair eosinophil chemotaxis, are also commonly used. The phagocytes move by a method called chemotaxis. In prokaryotes, this mechanism involves the methylation of receptors called methyl-accepting chemotaxis proteins (MCPs). Sperm find the eggs via chemotaxis, a type of ligand/receptor interaction. The key steps in this cascade are chemotaxis, mitosis, and differentiation. Under-agarose cell migration assay may be used to measure chemotaxis and chemokinesis.