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Representative experiment (left) or cumulative histogram (right) of PKH67 acquisition by CLL cells treated or not (UT) with blocking antibodies or by their respective isotype control antibodies (ctrl Ab) after 5 min or 4 h of contact with PKH67+ NLC, measured by flow cytometry (ratio PKH67 MFI vs PKH67 MFI UT 5 min). (A) anti-LFA3 (12 CLL patients). (B) anti-ICAM-1 (10 CLL patients). (C) anti-CD31 (10 CLL patients).
