research Intrinsic curvature in wool fibres is determined by the relative length of orthocortical and paracortical cells 27 citations , March 2018 in “Journal of Experimental Biology” Wool fibre curvature is due to longer orthocortical cells compared to paracortical cells.
research Curl secret in cells March 2018 in “Journal of Experimental Biology” Hair curliness is caused by the arrangement and length of two different cell types.
research Stiffness of Human Hair Correlates with the Fractions of Cortical Cell Types 4 citations , April 2019 in “Cosmetics” Hair stiffness is higher when it has more para-like cortical cells.
research A discrete transition zone between cuticle and cortex layers of a human hair fibre: changes observed in the presence of breast cancer 1 citations , October 2017 in “ecancermedicalscience” Breast cancer alters specific molecular structures in hair, which revert after cancer removal.
research Characterization of curved hair of Japanese women with reference to internal structures and amino acid composition. 13 citations , October 2008 in “PubMed” Japanese women's curved hair has an uneven internal structure and varying amino acid composition.