Chitosan but not chitin activates the inflammasome by a mechanism dependent upon phagocytosis.
Bueter CL, Lee CK, Rathinam VAK, Healy GJ, Taron CH, Specht CA, Levitz SM. Chitosan but not chitin activates the inflammasome by a mechanism dependent upon phagocytosis. J Biol Chem. 2011 Oct 14; 286(41):35447-35455.