thickness 1µm - 6µm: length ~100 µm
||Human Homo sapiens
||Robbins, Clarence R. Morphological and macromolecular structure, pp.1-62, chapter 1 in the book Chemical and physical behavior of human hair / Clarence R. Robbins.-2nd ed (2002) p.16 bottom paragraph
|| Randebrook, R.J. J. Journal of the Society of Cosmetic Chemists, Vol. 15, No. 12, 691-706 (1964)
||P.16 bottom paragraph: "Cortical cells are generally 1 to 6 microns thick and approximately 100 microns long [primary source] (see Figures 1-7, 1-14, and 1-15), although considerable variation in their size and shape has been reported [ref 45]. Human hair contains a symmetrical cortex, unlike wool fiber, and most of the cells are
of the same general type with regard to the ratio of fibrillar to nonfibrillar matter (highly crystalline = fibrillary: less organized = nonfibrillar)."