title: A new biologically active peptide system in serum related to classical anaphylatoxin.
mesh_terms: D000707:Anaphylaxis / Q000209:etiology; D000818:Animals; D001681:Biological Assay; D002633:Chemotaxis; D005260:Female; D006168:Guinea Pigs; D006636:Histamine Release; D007962:Leukocytes / Q000187:drug effects; D008297:Male; D008970:Molecular Weight; D010455:Peptides / Q000097:blood* / Q000494:pharmacology; D013997:Time Factors; D014118:Toxins, Biological / Q000097:blood* / Q000494:pharmacology
chemical_list: D010455:Peptides; D014118:Toxins, Biological