Keratin fibres IV. Structure of cuticlet

Abstract

The cuticle structure of keratin fibres of placental mammals, marsupials, and monotremes has been examined by the techniques of light microscopy and scanning electron microscopy. These techniques have been used to study both intact fibres and whole cuticle cells separated by formic acid treatment. Observations have been made on: (1) the size and shape of individual cuticle cells and the manner in which they are arranged in the surface of the fibre; (2) the large number of false scale edges (i.e. scale markings which do not correspond with the distal edge of a cuticle cell) for kangaroo and platypus fur; (3) variations in scale pattern along the length of seal and platypus fur and guard hair. The mechanism of scale formation in the follicle is discussed. © 1970 CSIRO.