Manmade ＂Chameleons＂

• 作者: TANG YUANKAI
• 来源期刊: 今日中国：英文版
• 学科: 生物学
• 关键词: 变色龙 色素细胞 哺乳动物 光反射
• 年，卷（期）: 2012,（5）
• 页码范围: 72-73
• 页数: 2页
• 分类号: Q959.6

摘要

<正>FINDING chameleons is no easy task. As most school children could tell you,they have a peculiar knack for changing color.This unique ability is the product of specialized chromatophore cells-pigment-containing and light-reflecting cells found in many classes of animals,but not mammals.The crafty chameleon boasts chromatophore cells in three overlapping layers beneath a transparent outer skin.The location and movement of pigment within these layers,controlled by impulses from the brain,dictates color at