Uncharged/close to neutral Dye?

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evajp24
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Uncharged/close to neutral Dye?

I am trying to find a dye for live cell imaging that is close to neutral in charge or uncharged. It is very important that it is uncharged or close to it. Anyone know of a dye like this? I was thinking about a PKH dye, but have no knowledge of its charge. Has anyone used PKH dyes or can you recommend another?