An answer to some questions raised by skin reactions observed during squaric acid dibutylester contact sensitization.
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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
D000276:Adjuvants, Immunologic; D000485:Allergens; D003503:Cyclobutanes; C020637:squaric acid dibutyl ester