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Cytotoxic activity of irradiated NK-92-scFv(ch14.18)HL-ζ cells. Established UKF-NB3 NB tumour cells were incubated at different E/T ratios with untreated NK-92-scFv(ch14.18)HL-ζ, or NK-92-scFv(ch14.18)HL-ζ cells 24 hrs after irradiation with a dose of 10 Gy. Cytotoxic activity was determined after 2.5 hrs of co-incubation in FACS-based cytotoxicity assays.
