third virus

The LT50 value for the virus ( 106 CPB/ ml) to the third and the fifth instar larvae were 9.6 and 10.5 days respectively. In another word, the LT50 value increased with the increased instar.

1×10°CPB/ml的多角体悬液对3龄、5龄幼虫的LT（50）分别为9.6天和10.5天，即LT（50）随龄期的加大而延长；

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Third, for any virus that did enter cells, the microbicide would block an enzyme, reverse transcriptase, that the virus needs to replicate.

第三，对于任何进入细胞的病毒来说，抗生素可以阻断一种病毒赖以复制的逆转录酶。

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Two others block the entry of the virus into the host cell and the third group prevents the virus from producing copies of itself.

另外两种药物阻止病毒进入宿主细胞，还有两种药物阻止细胞的自我复制。

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Effect of hepatitis B immunoglobulin used in third trimester of pregnancy on interrupting maternal-infant vertical transmission of hepatitis B virus

妊娠晚期乙肝孕妇注射乙肝免疫球蛋白对阻断乙肝病毒母婴传播的作用

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Objective: Hepatocellular carcinoma ( HCC) is the third most common cause of cancer mortality in the worldwide. Hepatitis C virus ( HCV) infection is the main risk factor for chronic hepatitis, cirrhosis and hepatocellular carcinoma development.

目的：全世界范围内原发性肝细胞癌（HCC）的死亡率居于第3位，丙型肝炎病毒（HCV）感染是导致慢性肝炎、肝硬化、肝细胞癌的重要病因之一。

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Third, the virus in order to survive will continue to mutate in order to prevent the body's immune system attacks and anti-viral drugs.

其三，病毒为了生存会不断变异，以防人体免疫系统和抗病毒药物的攻击。

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