A Lipopolysaccharide‐Deficient Mutant ofNeisseria meningitidisElicits Attenuated Cytokine Release by Human Macrophages and Signals via Toll‐like Receptor (TLR) 2 but Not via TLR4/MD2

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Abstract
Meningococcal disease severity correlates with circulating concentrations of lipopolysaccharide (LPS) and proinflammatory cytokines. Disruption of th