The expressed recombinant proteins reacted only to sera from patients with pemphigus vulgaris, not to sera from patients with bullous pemphigoid, patients with systemic lupus erythematosus and normal persons. 表达的重组蛋白仅与寻常性天疱疮血清反应,不与大疱性类天疱疮、系统性红斑狼疮以及正常人血清反应。