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Detection of LMP-1 protein expression in E1 and TE1 cell lines. After fixation and permeabilization, cells were first incubated with anti-LMP-1 antibodies (CS1-4) and then with an anti-mouse Ig labeled with PE. Cells were then analyzed by flow cytometry. Kas B-LCL was used as a positive control. The signal obtained with the isotypic control for E1 is indicated.
