单词：eumelanin
音标：[ju:'melәnin] ；
真黑素
eumelanin的用法和样例：
例句
- Phaeomelanin is responsible for the yellowish-blond to red colors and Eumelanin is responsible for the brown to black shades.棕黑素形成亚麻色到红色发质，真黑素形成棕色到黑色。
- Both animals and humans have phenotypic variations of eye color that are attributed to ratios of eumelanin, a substance produced by melanocytic cells in the iris.动物和人都有眼睛颜色的表征变化，这是由于真黑素含量不同造成的，真黑素是虹膜中的黑色素细胞产生的一种物质。