Dear all,

sorry for this off topic question. I am using baculovirus/insect cell expression and I have had persisting problems with contamination that seems to be some kind of fungus. I have a picture attached showing the filamentous structure of it. This contamination has persisted for a few months now and always seems to occur when we go to large 2.8 L flasks (however, there was also one instant where this was not the case). We have autoclaved all flasks for 90 minutes each and still we get contamination.

Does anybody have experience with this kind of contamination? And what would you suggest for us to do? We will (again) disinfect our incubator and the hood. Also we are thinking about using an antimycotic/antifungal drug to get rid of this problem.

Thanks a lot for any suggestion!

Filipp

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