The aim of this study is to express the receptor-binding domain of Bacillus anthracis protective antigen in E. coli. Signal sequence of the outer membrane prote
<正>To investigate the imbalance state of helper T lymphocytes(Th)and cytotoxic T lympho- cytes(Tc)and the roles of Th1/Th2/Th3 and Tc1/Tc2 cells in renal trans