Objective To explore the effect of bacillus calmette-guerin (BCG)intervention on expression of costimulatory molecules of B7-CD28/CD152 and T lymphocyte apoptosis in asthmatic mouse.

• 目的探讨卡介苗(BCG)干预对哮喘小鼠共刺激分子B7-CD28/CD152的表达及T淋巴细胞凋亡的影响。