Figure 4From: Clinical and morphological characteristics of head-facial haemangiomasA and B. Fluorescent light microscopy of a transversal section of a normal (A) artery of the face stained using Qayyum's method, which stains the catecholaminergic nerve fibers. Results are compared with an analogue image from an haemangiomatous artery (B) A = adventitia; M = medium layer; L = lumen (magnification 400×; bar 100 μm).Back to article page