j. Cosmet. Sci., 49, 141-153 (May/June 1998) The cracking of human hair cuticles by cyclical thermal stresses MANUEL GAMEZ-GARCIA, Croda North American Technical Center, 180 Northfield Avenue, Edison, NJ 08832.
Although these proteins become sclerotized and insoluble in the pupal exoskeleton, their sequences contain features characteristic for proteins occurring in less sclerotized pliable cuticles, such asarthrodial membranes and soft larval cuticles.
In soft cuticles such as the highly stretchy and soft cuticle of the locust there may be only 20 or so  whereas in some of the stiffer cuticles in the same insect there may be 200 or more .
Journal of the Geological Society, London, Vol. 155, 1998, pp. 453–462. Printed in Great Britain Molecular taphonomy of arthropod and plant cuticles from the Carboniferous of
We thank R. E. Reichle for cutting the thin sections of the cuticles; S. Caveney, 0. Holm-Hansen, R. A. Lew-in, A. C. Neville, and J. E. Tyler for helpful comments and discussions; W. Heili-genberg for help with the translation of Merker's paper; and the Mid-Pacific Marine Laboratory for providing ...
M Methods Counts were made by marking photocopies of microphotographs of cuticles taken either in plain unpolarized light or from the SEM, which is preferable to light microphotographs of species with thin cuticles such as living Ginkgobiloba 29.
It is likely that the defective cuticle in these plants impairs their ability to perceive the SAR signal, because mechanical abrasion of cuticles disruptsSARin wild-type plants (Xiaetal., 2009).
In soft cuticles such as the highly extensible soft intersegmental membrane cuticle of the female locust there maybe only 20orso ( Vincent and Shawky, 1978 ) whereas in some of the stiffer cuticles in the same insect there maybe 200 ormore ( Andersenetal., 1995 ).
The present studies were undertaken to clarify this point further and to evaluate th e use of isolated cuticles in permeability studies. In general, we have found that any treatment leading towards chitin purification alters the membrane structure extensively.
No tool, machine, or razor-edged instrument designed to pierce the dermis or to remove calluses is permitted; nippers shall ony be used to remove loose cuticles.