下面提到牛奶；适量，别偏信一个指数，实际上世界上事情都是

要不可怜老牛会哗哗的产奶。

?

Recombinant somatotropin, rBST?(previously called bovine growth hormone), is a genetically engineered hormone injected into dairy cows to increase milk production. Milk from rBST-treated cows is used in dairy products including ice cream, butter, cheese and yogurt.

?