- 骨胶原 gǔjiāoyuán collagencollagen; a type of protein found in skin and bones
- 胶原蛋白 jiāoyuándànbái collagenA fibrous protein found in the connective tissue, skin, and bones of animals; widely used in medical materials, cosmetics, and the food industry.
- 胶原质 jiāoyuánzhì collagencollagen; a protein found in connective tissue and bone that is widely used in biotechnology, medical materials, and cosmetics