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).
CHITIN AND THE FUNGAL CELL WALL. The fungal cell wall is a complex organelle that is a composite of glucan and chitin fibers held together by proteins and mannan. The second most common polysaccharide in the environment, chitin, is a polymer of N-acetylglucosamine.