PrP106-126 is a fragment of human prion protein that is present in biological samples. It has been shown to act as an agonist at the human FPR2/ALX GPCR.

GRP-60367 is the first small molecule rabies virus (RABV) entry inhibitor, which has nanomolar effect on some RABV strains.Grp-60367 inhibits the entry of a subset of the RABV strain.Grp-60367 showed the specificity and effective anti-RABV activity of the scaffold. In the dose-response analysis, the EC50s range from 2 to 52 nM in different host cell lines.

Tyroserleutide TFA, isolated from the degradation products of porcine spleen, is a small molecular tripeptide which inhibits tumor growth both in vitro and in vivo.