A herpetic ulcer is seen microscopically to have a sharp margin. 皰疹性潰瘍有明顯的界限。
At high magnification, the squamous mucosa at the margin of the herpetic ulcer shows pale pink "ground glass" inclusions within squamous epithelial cells. 高倍鏡下,皰疹性潰瘍邊緣的鱗狀上皮細胞內有淺粉紅色的毛玻璃樣物。