центрифугировать клетки на фиколлгепаке

центрифугировать клетки на фиколл-гепаке — centrifuge the cells over a Ficoll-Hypaque B cells (2 x 10 56 0/1.5 ml) were stimulated for 48h with... in the presence ot absence of..., and then centrifuged over a Ficoll-Hypaque to deplete dead cells and RBS.