Hi, guys,
Do you have problem using B cell negative selection kit form Meltinyi?
Sometime the B cell is pure, CD19+>95%, but sometimes it lower than 90%.
The most critical thing is to treat the cells very gently in order to avoid aggregates and to not overload the beads.
In addition to above comment, try not to wash the column for long or 2-3 times to get more yield. With one wash you can always achieve more than 90-95%.
Thank you.
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