Figure 3
From: Clinical and morphological characteristics of head-facial haemangiomas
A and B. Fluorescent light microscopy of a transversal section of a normal (A) artery of the face stained using Falck's method for the staining of adrenergic nerve fibers compared with a haemangiomatous artery (B). A = adventitia; M = medium layer; E = endothelial layer; L = lumen (magnification 400×; bar 100 μm).