Thickness of epicuticle layer of cuticle cell in hair

Value 13 nm
Organism Mammals
Reference Wolfram LJ. Human hair: a unique physicochemical composite. J Am Acad Dermatol. 2003 Jun48(6 Suppl):S106-14. DOI: 10.1067/mjd.2003.276 p.S108 left column top paragraphPubMed ID12789162
Primary Source [3] JA Swift, JR. Smith Microscopical investigations on the epicuticle of mammalian keratin fibres J Microsc, 204 (2001), p. 203PubMed ID11903797
Method Atomic force microscopy
Comments P.S107 right column bottom paragraph: "The layer of epicuticle, shown in Fig 4, has been a matter of controversy since von Allworden (ref 1) deduced its existence by observing the membrane-bound sacs on mammalian hairs treated with chlorine water. As recently as 1995, an assertion was made that the membrane is not a histologically identified component of the cuticle cell, but rather a by-product of the reactive modification of other subcomponents of the cuticle (ref 2). Atomic force microscopy tentatively identified the epicuticle as a continuous layer 13 nm thick, covering the entire outwardly facing intracellular surface of every cuticle cell (primary source)."
Entered by Uri M
ID 114260