Ezabenlimab (BI-754091) is an anti-PD-1 monoclonal antibody (mAb) with a binding constant (Kd) of 6 nM in CHO cells.

Albonoursin is used as an antibacterial cyclic dipeptide.

Bursin is a peptide that can be isolated from the bursa of Fabricius of chicken. Bursin induces the phenotypic differentiation of mammalian and avian B precursor cells. Bursin also increases cyclic guanosine monophosphate in cells of the human B-cell line Daudi, its derivatives are able to protect against infection by amplifying the immune response induced by H9N2.