Whey are by product of the industrial production of cheese and casein.
乳清是工业生产干酪及干酪素的副产品。

Whey, Casein, Soy Why Protein Sources are Different.Applications for Endurance Athletes.
乳清蛋白, 酪蛋白, 大豆耐力运动员的蛋白质来源为什么不同？

Study on the separation process of casein micelle and whey protein of skim milk by membrane technology
膜技术分离脱脂乳中酪蛋白胶束和乳清蛋白工艺的研究

Glycosylation of Individual Casein and Whey Protein and Evaluation of Their Physiochemical Characteristics
糖基化处理对酪蛋白，乳清蛋白理化性质的影响

Milk proteins are classified into two major types, casein and whey protein, both of which are heterogeneous.
乳蛋白质主要分为两类酪蛋白和乳清蛋白, 它们都是混合物。

Similarily, the tumor area was less in the whey protein group in comparison to either the casein or Purina groups, with some difference between casein and Purina groups.
三组的体重变化相近。