Pentigetide is a sythsis pepetide (Asp-Ser-Asp-Pro-Arg or D-S-D-P-R), also know as “HEPP” for “Human IgE Pentapeptide”. Pentigetide can not produce IgE inhibition in several different systems, due to the aspartic acids in HEPP changed into an asparagine.

15-Hydroxy-3,11,23-trioxolanost-8,20-dien-26-oic acid (comound 35) is a triterpenoid that can be isolated from Ganoderma lucidum.

Val-Gly-Ser-Glu (NSC 350591) is an ECF-A tetrapeptide. Val-Gly-Ser-Glu dose-dependently increases the number of human eosinophils, but not neutrophils, rosetting with complement-coated sheep erythrocytes (EAC3b).