菌苗原

The vaccine contains two main protective antigens, leucocytosis promoting factor and filamentous haemagglutinin that are purified from culture supernatant of the Chinese Strain G.

采用百日咳杆菌C.S中国株经培养、盐析、浸提、组分分离以及脱毒等工艺，制备出含有LPF和FHA两种主要免疫原的无细胞百日咳菌苗。

It has been found recently that the toxin gene ctxAB is carried by the lysogenic bacteriophage CTXΦ. The possibility in theory exists that the vaccine strain could reacquire ctxAB from a wild-type strain in the intestine or in the environment by horizontal transfer of CTXΦ.

但是，毒素基因ctxAB由溶原性噬菌体CTXΦ携带，可能在偶尔的情况下水平转移给减毒活菌苗，给其在现场应用的安全性带来了重大隐患。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。