1、引言 A、宿主特异性(只限小鼠) 乳酸脱氢酶增高病毒(LDV)具有不寻常的极端的宿主特异性。就目前所知,LDV只感染小鼠。这种病毒可在迄今为止所试验的所有品系的小鼠体内快速复制,并产生一种持久的感染。即使血液中一直表现出很高的感染滴度,但通常观察不到感染LDV的小鼠有临床疾病的表现。这种感染的特点是一定的血清酶水平的增高。这个特点实际上导致此病毒的最初发现,且现在仍用来检查 1. Introduction A. Host-Specific (Mouse Only) Lactate Dehydrogenase Increasing Virus (LDV) has an unusually extreme host specificity. As far as we know, LDV only infects mice. This virus replicates rapidly in mice of all strains tested to date and produces a lasting infection. Even though high titer of infection has been shown in the blood all the time, the symptoms of clinical disease are not usually observed in mice infected with LDV. This infection is characterized by certain levels of serum enzymes. This trait actually led to the initial discovery of the virus and is still used to check it