Description_x000D_ General description_x000D_ Lipid A is the fundamental structure of lipopolysaccharides (LPS), present in bacteria._x000D_ Application_x000D_ Lipid A, diphosphoryl from Escherichia coli F583 (Rd mutant) has been used:_x000D_ • to study the effect of various lipid A molecules on lung pericyte proliferation in vitro_x000D_ • to test on THP-1 and J774A.1 cells for neopterin and nitrite formation respectively_x000D_ • as lipopolysaccharides (LPS) derivatives in binding experiments_x000D_ • to stimulate the spleen cells and as a mitogen stimulation for toll like receptor 4 (TLR4)_x000D_ Packaging_x000D_ 1, 5 mg in glass bottle_x000D_ Biochem/physiol Actions_x000D_ Lipid A is mainly essential for the robust immunostimulatory activities of lipopolysaccharides (LPS) in human. Lipid A is the hydrophobic domain of LPS helps in anchoring LPS to the plasma membrane of bacteria. It is immunologically active and an important constituent of LPS recognised by immune system.