detachment of magnetic mircrobeads?

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Gilligan
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detachment of magnetic mircrobeads?

I am trying to purify Mast cells using Miltenyi Biotec Magnetic microbeads.  I was going to do a postive selection for them using microbeads that bind to PE.  After selecting for the Mast cells however, is it possilbe to unbind the microbeads from the Mast cells so they do not hinder incubations? 

Thanks!