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首页> 外文期刊>Experimental Animals >Experimental Evaluation of Cross-contamination between Cryotubes Containing Mouse 2-cell Embryos and Murine Pathogens in Liquid Nitrogen Tanks
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Experimental Evaluation of Cross-contamination between Cryotubes Containing Mouse 2-cell Embryos and Murine Pathogens in Liquid Nitrogen Tanks

机译:液氮罐中含小鼠2-细胞胚胎和鼠类病原体的冷冻管交叉污染的实验评估

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摘要

It has been suspected that embryos stored in liquid nitrogen tanks may become contaminated with murine pathogens, if some pathogens had been introduced to the tanks accidentally. To examine this, we stored tubes containing embryos with tubes containing mouse hepatitis virus (MHV) or Pasteurella pneumotropica in liquid nitrogen tanks and examined whether progeny mice derived from the embryos were contaminated with the pathogens or not. After storing for 6 months or 1 year the frozen embryos were thawed and implanted into the oviducts of pseudopregnant female mice, and the mice were bred in vinyl isolators. We could not detect serum antibodies to MHV and isolate Pasteurella pneumotropica in the progeny mice, suggesting that cross-contamination between tubes in a liquid nitrogen tank scarcely occurs.
机译:据怀疑,如果某些病原体被意外引入到液氮罐中,则可能会将其感染到鼠类病原体中。为了对此进行检查,我们将装有胚胎的试管和含有小鼠肝炎病毒(MHV)或嗜热巴斯德氏菌的试管保存在液氮罐中,并检查了源自胚胎的后代小鼠是否被病原体污染。保存6个月或1年后,将冷冻的胚胎解冻并植入假孕雌性小鼠的输卵管中,然后在乙烯基隔离器中繁殖这些小鼠。我们无法在后代小鼠中检测到抗MHV的血清抗体并分离出嗜热巴斯德氏菌,这表明液氮罐中的试管之间几乎不会发生交叉污染。

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