Lipopolysaccharides, from S. enterica (Salmonella enterica) serotype enteritidis, are endotoxins derived from this serotype known for causing enteritis and serve as TLR-4 activators. This S-type LPS triggers the immune system's pathogen-associated molecular patterns (PAMP) and induces the secretion of exosomes. It consists of a typical tripartite structure: the O antigen, core oligosaccharide, and lipid A. These lipopolysaccharides can provoke a systemic inflammatory response, leading to increased plasma levels of TNF-α, IFN-γ, IL-6, IL-10, and nitrates.