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‘Not all DI water are alike’ or ‘Why the Aria Broke.’

Symptoms: Anything we put through the FACSAria, came out dead. Not like exploded, obliterated dead, just permeable to trypan blue, not-able-to grow, dead. Secondly, tandems looked weird. For example, PE-Cy7 would have a PE-Cy7 positive population, but then it would...