Lipopolysaccharides (LPS) derived from Escherichia coli 055:B5, are a unique component of the cell wall of Gram-negative bacteria. They are composed of three regions: lipid A, oligosaccharide core, and O-specific polysaccharide (O-antigen). Lipopolysaccharides help maintain the integrity of the cell outer membrane and protect bacteria from damage by bile salts and lipid antibiotics. Lipopolysaccharides are highly immunogenic antigens that can enhance immune responses and can be used to construct inflammatory models.

Lipopolysaccharides, Escherichiacoli (E. coli O111:B4) are derived from Escherichia coli O111:B4 and are a unique component of the cell wall of Gram-negative bacteria. They are composed of three regions: lipid A, oligosaccharide core, and O-specific polysaccharide (O-antigen). Lipopolysaccharides, Escherichiacoli help maintain the integrity of the cell outer membrane and protect bacteria from bile salts and lipid antibiotics.

Porcine pancreatic elastase is a serine protease composed of a single polypeptide chain with 240 amino acid residues. It has the ability to hydrolyze polypeptides and proteins, and can induce emphysema in hamsters.