title: Trypsin-kallikrein inhibitors from snails (Helix pomatia).
mesh_terms: D000595:Amino Acid Sequence; D000596:Amino Acids / Q000032:analysis; D000818:Animals; D007611:Aprotinin / Q000302:isolation & purification; D003429:Cross Reactions; D004220:Disulfides; D004355:Drug Stability; D006372:Helix, Snails / Q000032:analysis*; D009682:Magnetic Resonance Spectroscopy; D008722:Methods; D008970:Molecular Weight; D011487:Protein Conformation; D012908:Snails / Q000032:analysis*; D013045:Species Specificity
chemical_list: D000596:Amino Acids; D004220:Disulfides; D007611:Aprotinin