Columbianetin is a phytoalexin associated with celery (Apium graveolens) resistance to pathogens during storage. Columbianetin exhibits excellent anti-fungal and anti-inflammatory activity.

Interphotoreceptor Retinoid Binding Protein Fragment (IRBP) is a 20-residue peptide, which is a major pathogenic epitope. It exists in the first homologous repeat of interstitial visual pigment Binding Protein peptide (IRBP 161-180) and can induce post-uveitis (EAU).

This peptide is a scrambled sequence of NADPH oxidase assembly peptide inhibitor gp91 ds-tat. It is used as a control peptide. It is two amino acid residues shorter at the N-terminus compared to the scrambled gp91 ds-tat.