Primary Duties and Responsibilities: 1)Be responsible for cell culturing, literature research collection and experiment notebook writing.  2)Be responsible for managing the reagents and consumables in BRL. Cooperate with 3rd party about antioxidant experiment.  3)Cooperate with colleagues, institutes to develop novel method for RD if needed. Requirements: 1. Be familiar with Nutrition and Bioassay Research Lab. 2. Be familiar with basic skills for cell experiment, better skin cells. 3. Be careful and patient. 4. Good interpersonal relationship, self-management. 5. Work for at least three days in BRL every week.