biopsy specimens of 1- to 7-day-old oral ulcers from patients with minor ( mikulicz ) , herpetiform , and behcet 's aphthae and of nonulcerated oral mucosa of aphthous patients were subjected to a quantitative , stereologic , electron microscopic analysis of the connective tissue infiltrate residing both at the center of and lateral to the ulcers .
C0038363
aphthae
C0041582
ulcers