Figure 5.

Neurotoxicity of variant Aβ peptides. Primary neuronal cells were grown for 7 days in vitro, and then neurons were exposed to various Aβ peptides at the final concentration of 5 μM for 96 h. Cell viability was determined by measuring the reduction of MTS. Data are presented as the mean ± S.E.M. of three independent experiments. Student’s t test was applied to determine the significance, denoted as ^** P < 0.01.