NCI Drug Dictionary
The search textbox has an autosuggest feature. When you enter three or more characters, a list of up to 10 suggestions will popup under the textbox. Use the arrow keys to move through the suggestions. To select a suggestion, hit the enter key. Using the escape key closes the listbox and puts you back at the textbox. The radio buttons allow you to toggle between having all search items start with or contain the text you entered in the search box.
An endotoxin and biologically active component of the Gram-negative bacterial cell wall that is a Toll-like receptor 4 (TLR4) agonist with potential immunostimulatory activity. Upon internalization, lipopolysaccharide (LPS) activates TLR4 which in turn activates the NFkappaB pathway, in addition to mitogen-activated protein kinases signaling pathways. This leads to the release of proinflammatory cytokines and stimulates an innate immune response against vaccine antigens. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)