Expression and significance of MMP-9 in recurrent aphthous ulcer / 实用口腔医学杂志

Objective:To explore the expression and significance of MMP-9 in recurrent aphthous ulcer(RAU).Methods:The expression intensity and distribution of MMP-9 were examined by immunohistochemistry and RT-PCR in 56 cases of recurrent aphthous ulcer patients.Results:The expression level of MMP-9 in RAU patients was higher than that in the normal group(P