宫内感染是早产发生的重要原因。
Intrauterine infection is a major cause of preterm delivery.
母亲传染性强是宫内感染的重要因素。
Strong infectiousness of mother is an important factor in intrauterine infection.
对于HBV宫内感染目前尚无有效的预防措施，究其原因是宫内感染机制不明。
To prevent HBV intrauterine infection is very difficult for its mechanism not being known clearly.
本研究从HBV基因突变入手，进一步探讨可能与宫内感染发生有关的突变位点。
Some gene position's mutation might have association with the HBV intrauterine infection.
本研究从HBV基因突变入手，进一步探讨可能与宫内感染发生有关的突变位点。
Some gene position's mutation might have association with the HBV intrauterine infection.
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