Understanding the Lingual Frenulum: Histological Structure, Tissue Composition, and Implications for Tongue Tie Surgery

Figure 9

Collagen typing using polarized light microscopy (PSR). (a–d) Bright light microscopy: types I and III collagen stain red. (e–h) Corresponding images using polarized light microscopy: type III collagen highlights green.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)