Objective:To study the relation between recurrent aphthous ulcer (RAU) and serum copper.

目的：探讨血清铜与复发性口腔溃疡的关系。

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Objective: To design and gain good curative effect diaphragm for cure of aphthous ulcer.

目的：设计和制备疗效较好及价廉的口腔溃疡膜。

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Objective: To study the therapeutic effects of preemptive analgesia on recurrent aphthous ulcers (RAU).

目的：探讨早期镇痛疗法对复发性口腔溃疡(RAU)的疗效及临床意义。

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Some children do have repeated fevers that are caused by various conditions such as disorders of the immune system, cyclic neutropenia or PFAPA (periodic fever with aphthous stomatitis, pharyngitis and adenitis).

CNN: Why do kids always get fevers on Sunday nights?