Johnson J R, Shearer T R
J Dent Res. 1979 Aug;58(8):1836-9. doi: 10.1177/00220345790580081501.
Selenium concentrations in successive layers of bovine incisor enamel showed no concentration gradient and no increase with age. Selenium was taken upt into the continuously-growing rat incisor in proportion to the amount of selenium in the diet. A sensitive (approximately 1 ng Se) and relatively simple fluorimetric method for determining selenium in small amounts of hard tissues is presented.
牛切牙釉质连续各层中的硒浓度未显示出浓度梯度，也未随年龄增长而增加。硒以与饮食中硒含量成比例的方式被摄取到不断生长的大鼠切牙中。本文介绍了一种灵敏（约1纳克硒）且相对简单的荧光法，用于测定少量硬组织中的硒。
