Hormones can be proteins, endocrine hormones can be proteins, meaning they're large molecules that are usually fairly water soluble, or they can be steroids.
激素可以是蛋白,内分泌激素可以是蛋白,这意味着激素是大分子,并且通常是水溶性的,激素也可以是类固醇
生物医学工程探索课程节选 : 耶鲁公开课
2
They're small molecules, they're lipid soluble, they can go from extracellular to intracellular.
它们是小分子,并且是脂溶性的,它们能从胞外进入胞内
生物医学工程探索课程节选 : 耶鲁公开课
3
They're water soluble and fat soluble vitamins that look like this, and the difference between the two is that the fat soluble vitamins when they're ingested, gets stored in the body fat primarily in the liver.