Chitin is a large, structural polysaccharide found in the cell walls of fungi, the exoskeletons of insects, and certain hard structures in fish and invertebrates.

Orobanchyl acetate, a natural strigolactone, is a germination stimulant for root parasitic plants.

LL-37 (37-1) is a polypeptide that can be found by peptide screening. Peptide screening is a research tool that pools active peptides primarily by immunoassay. Peptide screening can be used for protein interaction, functional analysis, epitope screening, especially in the field of agent research and development.