Flow cytometry was conducted as previously described [3 (link)]. Cultured cells were stained with 0614 mAb or human chimera 0614-5 mAb or IE9 mAb as the primary antibody and Alexa Fluor 488- or 647-conjugated anti-rat or human or mouse-Ig polyclonal antibody (Thermo Fisher Scientific) as the secondary antibody. Stained cells were analyzed on a Guava easyCyte 10HT (Merck Millipore). Dead cells were stained using propidium iodide (PI) (Thermo Fisher Scientific). Data were analyzed using the FlowJo software (Tree Star, Tokyo, Japan).
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