title: All KLH preparations are not created equal.
mesh_terms: D000818:Animals; D005189:False Positive Reactions; D006433:Hemocyanins; D006458:Hemolymph; D006801:Humans; D008974:Mollusca / Q000276:immunology*; D012882:Skin Tests / Q000379:methods
chemical_list: D006433:Hemocyanins