| endotoxic | Of, relating to or acting as an endotoxin (= a heat stable toxin, associated with the outer membranes of certain gram-negative bacteria. Endotoxins are not secreted and are released only when the cells are disrupted). (18 Nov 1997) |
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| lipopolysaccharide | <biochemistry> The major constituents of the cell walls of gram-negative bacteria. Highly immunogenic and stimulates the production of endogenous pyrogen interleukin-1 and tumour necrosis factor. (18 Nov 1997) |