Litorin, an amphibian bombesin peptide derivative, is an bombesin receptor agonist. Litorin stimulates the contraction of smooth muscle, stimulates gastrin, gastric acid, and pancreatic secretion, and suppresses the nutriment in vivo.

[Gln8] Luteinizing hormone releasing hormone ([Gln8] LH-RH), Avian hypothalamic peptide that stimulates release of gonadotropins from anterior pituitary, thus regulating reproductive functions.

Vopratelimab (JTX-2011) is a selective humanized immunoglobulin G1-kappa monoclonal antibody and a potent ICOS agonist with high affinity for inducible T cell co-stimulating factors (ICOS), showing affinities of 0.93 nM for hICOS, 3.7 nM for rat ICOS, and 0.64 nM for mICOS.