JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS Figure 4. Transverse hair section digested with trypsin for 5 h and then stained with ammoniacal silver nitrate A, A-layer. Figure 5. Transverse hair section digested with trypsin for 70 h and then stained with dodecatungstophosphoric acid (PTA). D, intercellular cement of 8-band. (Facingp. 292)
CHEMISTRY OF HUMAN HAIR CUTICLE--III 293
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