In the skin, sympathetic nerves, arrector pili muscles, and hair follicles form a tri-lineage unit to cause piloerection or goosebumps. In this issue of Cell, Schwartz et al. report that, beyond goosebumps, muscle-anchored nerves form “synapse-like” connections with hair follicle stem cells to promote hair regeneration in response to cold.

中文翻译：

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寒冷事件的多毛结局。

在皮肤中，交感神经，三角肌和毛囊形成三谱系单元，引起竖毛或鸡皮ump。在《细胞》杂志上，Schwartz等人 报告指出，除了鸡皮ump，肌肉锚定的神经与毛囊干细胞形成“突触样”连接，以促进寒冷时头发的再生。