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蜕变的七七

新虫 (初入文坛)

引用回帖:
4楼: Originally posted by 青铜时代 at 2014-01-13 01:10:36
可能原因:
1)斜面在冰箱保存太久,菌已过分老化了
2)接种环过热,挑的菌已被高温杀死
3)菌并非没有长,而是没有超过10的7次方cfu/ml水平(要知道菌的浓度在10的6次方以下,你凭肉眼是判断不出是否长菌的), ...

拧松盖子的话,不会被杂菌污染吗?
11楼2014-05-06 10:02:21
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