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Prevention of AβP-mediated toxic effect on PC12 cells by sera against f88-EFRH phage. Cells were incubated with fibrillar Aβ alone, or with fibrillar Aβ that had been incubated with serum from the third bleeding at different concentrations. Serum of unimmunized animal was used as negative control. The MTT assay was used to estimate cell survival.
