job content: 1. Responsible for the establishment and verification of cell bank. 2. Responsible for cell expansion and culture. 3. Responsible for virus culture, harvesting, isolation and purification 4. Be responsible for sorting out experimental records and preparing relevant application materials. Job requirements: 1. Bachelor degree or above, major in biology. 2. Proficient in office software. 3. English level requires CET-4 or above. 4. Have team spirit and certain pressure resistance.