These are regular skin, fat, liver, or other cells that scientists have changed to behave like embryonic stem cells.

这些细胞可以是普通的表皮、脂肪、肝或者其他种类的细胞，而科学家们已经能够将它们转变为具有胚胎干细胞功能的细胞。

Don't forget to clean your styling tools regularly to prevent residues of skin fat, conditioner, and styling substances from gluing your hair together.

别忘了定期清洁你的造型工具，防止皮肤油脂、护发素和定型物质残留在头发上。