 Suillus americanus contains a polysaccharide known as a beta glucan that laboratory tests suggest may have anti @-@ inflammatory activity . Known specifically as a ( 1 → 3 ) - , ( 1 → 4 ) -β @-@ D @-@ glucan , its natural function is as a component of the fungal cell wall , where it forms microcrystalline fibrils in the wall that give it rigidity and strength . The anti @-@ inflammatory activity results from the polysaccharide 's ability to inhibit the production of nitric oxide in activated macrophages , a cell of the immune system . 
