Figure 1

Hematoxylin and eosin-stained histopathologic sections consisting of normal minor salivary gland (A and B), normal squamous mucosa adjacent to invasive carcinoma (C and D), carcinoma in situ (E and F), and invasive squamous carcinoma (G and H), before (A, C, E, and G) and after (B, D, F, and H) microdissection. Under stereomicroscope (SZ-40; Olympus, Tokyo, Japan), the areas of interest can be fairly accurately targeted and removed manually using a pointed surgical blade.