Methods: DNFB was used to induce mice delayed-type hypersensitivity (DTH) response, and ear swelling degree was used as evaluating indication.
方法：以DNFB诱导小鼠迟发超敏(dth)反应作为模型，用耳肿胀度作为主要的检测指标。
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Objective To explore the changes of CD8 + t cell subtypes especially CD8 + CD28 -t suppressor cells in rats with experimental colitis induced by 2, 4-dinitrofluorobenzene (DNFB).