Bushings are one of those things that most people don't really think about until they find out they have a $600 mechanic's repair bill on their hands. Some even think the mechanic is trying to rip them off when they mention bushings needing replaced.
Lignin is a phenolic compound, chemically related to benzene. The cell walls of fungi are diverse among the taxonomic groups, but most contain chitin microfibrils embedded in a polysaccharide matrix and covered with a loose coating of additional molecules combining sugars and peptides (amino acid chains).
The S-layer, composed of proteins, is highly porous but can prevent phagocytosis and phage infection. In archaea, the S-layer serves the structural function of a cell wall. The capsule, composed of polysaccharide and glycoprotein filaments, protects cells from phagocytosis.