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(A-C): Bar charts showing shaft and medulla features of hair strands from women with the three different styling methods. (A) shows hair shaft diameter. Error bars represent SD. (B) shows proportions of hair strands in which the medulla was present or absent. (C) shows proportions of medullary types in the hair strands.
Abbreviations: Scalp hair origin; F, frontal; L, left temporal; R, right temporal; O, occipital; V, vertex.
