the gene for a human epsilon chain fc fragment has been cloned and expressed at a high level in escherichia coli , and its biological activity in binding to the high-affinity receptors on mast cells and basophils and mediating histamine release has been examined in a variety of assays , including the inhibition of passive cutaneous anaphylaxis in human skin , which was induced by ragweed immunoglobulin ige antibody and antigen .
C0020846
immunoglobulin ige
C0003241
antibody