She was widely recognized by other researchers for her work with a protein called transforming growth factor-beta.

VOA: special.2009.01.27

You also have to factor in here how much physical work is involved in getting the food.

你还要考虑,多少体力,被用了在寻找食物上

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选