title: Simultaneous demonstration of connective tissue elastica and fibrin by a combined Verhoeff's elastic-Martius-scarlet-blue trichrome stain.
abstract: A method for the routine combined demonstration of elastica, connective tissue in general, and fibrin is described. Elastica, stained blue-black by Verhoeff's iron hematoxylin, is contrasted with muscle and collagen, stained red and blue or green respectively, by a modification of the Martius-scarlet-blue (MSB) trichrome for fibrin of Lendrum et al. The MSB technique selectively stains fresh, mature and old fibrin orange-yellow, red and blue respectively; the Masson trichrome does not distinguish between erythrocytes and fibrin. Nuclei are stained at the same time as the elastica. The technique takes approximately one and a half hours and is ideal for the study of connective tissue and vascular pathology, especially the necrotizing vasculitides.
mesh_terms: D001391:Azo Compounds; D001578:Benzopyrans; D004396:Coloring Agents; D003238:Connective Tissue / Q000033:anatomy & histology*; D005290:Ferric Compounds; D005337:Fibrin / Q000032:analysis*; D006416:Hematoxylin; D006801:Humans; D007454:Iodides; D007501:Iron; D013194:Staining and Labeling
chemical_list: D001391:Azo Compounds; D001578:Benzopyrans; D004396:Coloring Agents; D005290:Ferric Compounds; D007454:Iodides; C042644:Verhoeffs iron hematoxylin; D005337:Fibrin; C042643:Martius scarlet blue trichrome; D007501:Iron; D006416:Hematoxylin