AUNP-12 TFA (NP-12 TFA) is a polypeptide antagonist in the pd-1 signaling pathway, which has the same antagonistic effect on pd-l1 and pd-l2, and can protect the proliferation and effector function of lymphocytes.

24-Diamino-6-hydroxypyrimidine (DAHP) is a selective specific inhibitor of GTP cyclohydrolase I the rate limiting step for de novo pterin synthesis.

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.