Authors first posed clear that: among many complicated causes of disease of RAU, EsRFc, T8, serum IgG,Cu were risk factors, and BC, Zn, Salivery C3, LYZ of saliva and serum were safeguard factors.

• 作者首次明确提出在RAU众多复杂致病因素中,EsRFc、T8、血清IgG、Cu是致病的危险因素; 而B淋巴细胞、血清Zn、唾液C3和体液中LYZ则是重要的保护因素。