대조군 Multi 및 2-layer구조의 scaffold를 비교군으로 설정하여 celladhesion 정도를 분석 Cell seeding and culture ..PAGE:12 ... inner space for cells & cell proliferation ..PAGE:6 Materials and methods Materials Lactide, glycolide ... structure provide adequate space for celladhesion, gas change, transport of nutrients Degrade by bulk