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How the retroviral env gene has these effects is not clear .

逆转录病毒env基因为何拥有这种作用尚不清楚。

Construction for retroviral expression vector of high expression and easy isolation of human hbd2 .

人hbd2高表达易分离逆转录表达载体构建。

Thousands of people have died of aids because of the near-absence of retroviral drug treatment outside rangoon and mandalay .

由于仰光和曼德勒之外的地方几乎没有抗逆转药物治疗，数以千计的人因艾滋病而死。

At present , concerns about safety are so overwhelming that effors to develop a live retroviral vaccine are unlikely to win much support .

目前对于安全性的关注高过一切，要想培养活的逆转录酶病毒疫苗，不大可能得到太多人支持。

Human acute myeloid leukemias may be etiologically associated with new human retroviral infection .

人类急性髓系白血病逆转录病毒感染的研究。