blister AE gingival blister AE 牙龈泡 QY, JX, HY http://en.volupedia.org/wiki/Blister This is an AE which is a small pocket of body fluid (lymph, serum, plasma, blood, or pus) within the upper layers of the gingival skin, usually caused by forceful rubbing (friction), burning, freezing, chemical exposure or infection. 10049304