title: An answer to some questions raised by skin reactions observed during squaric acid dibutylester contact sensitization.
authors.forename: R
authors.initials: R
authors.lastname: Happle
mesh_terms: D000276:Adjuvants, Immunologic / Q000009:adverse effects*; D000485:Allergens / Q000009:adverse effects; D003503:Cyclobutanes / Q000009:adverse effects*; D017449:Dermatitis, Allergic Contact / Q000209:etiology*; D006801:Humans; D010328:Patch Tests; D012867:Skin / Q000187:drug effects / Q000473:pathology
chemical_list: D000276:Adjuvants, Immunologic; D000485:Allergens; D003503:Cyclobutanes; C020637:squaric acid dibutyl ester