The hair shaft and inner root sheath move together as the hair grows toward the surface: the outer root sheath remains fixed in position.
毛干和内根鞘当到达体表时融合在一起：外根鞘仍然保持在原来的位置。
2
Objective To observe the growth kinetics of dermal papilla cells and dermal sheath cells from human hair follicles in vitro and the effect of epidermal growth factor (EGF) on them.
目的观察人正常头皮毛囊真皮成分的细胞体外培养的生长繁殖曲线及表皮细胞生长因子对它们的影响。
3
AIM: to investigate the expression of cytokeratin K19 and proliferation capability in cultured follicular outer root sheath cells derived from plucked human sc alp hair.