图示接触性皮炎，由致敏淋巴细胞引起的IV型超敏反应，在接触致敏性物质几天后出现。
This is contact dermatitis, a form of type iv hypersensitivity in which pre-sensitized lymphocytes led to this inflammatory reaction a couple of days after contact with the offending plant material.
方法采用斑贴试验分析1 21例脐周变应性接触性皮炎患者的致敏原。
Methods 121 cases with peri-umbilicus allergic contact dermatitis were tested with a standardized patch-testing technique.
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