the n strain of porcine parvovirus was a natural low virulent variant strain, which was isolated from the viscera of a stillborn fetus farrowed by a gilt in guangxi.
猪细小病毒n株是从广西初产母猪所产死胎脏器分离的自然弱毒株。
objective: to observe if there were the express of hbcag in the umbilical cord tissue of the stillborn fetus infected by hbv through maternal-fetal transmission.
目的:观察乙型肝炎病毒是否通过产妇传播在胎儿脐带组织表达。
conclusion: chromosome anomalies are the major causes of natural abortion, stillborn fetus and imbecile as well, which should be more attention by medical workers.
结论:染色体异常是自然流产、死胎及儿童智能低下的重要原因,应引起临床医学工作者的高度重视。