5ISO/TC194. Biological testing of medical and dental rnaterials and devioe[S]. 1992.
6MOSROAM T. Rapid colorimetric assay for cellular growth and survival: application to proliferation and cytotoxicity assay[J]. J Immunol Methods, 1983,65(1-2): 55.
7ARONSON L A, LINDSKOG S, RYGH P. Orthodontic mgnets: effects on gingival epithelium and alveolar bone in monkeys[J]. Eur J Ortho, 1992,14:255.
