This is APEs its pretty clearly contaminated but there is a small patch that looks ok. When should I move it to a new agar plate? by Prof. Frags

LooseCannon: I would say transfer it now, and if it turns out to be contaminated, it will be relatively much less than the current plate. So, if necessary do another transfer at that point. But right now, you want to focus on getting the good away from the bad

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