Aim Fuzhisan( FZS),a Chinese herbal complex prescription that has been used for the treatment of AD for over 15 years,is known to enhance the cognitive ability in AD patients.In this study,to investigate whether FZS reduces Aβ_(25-351)-induced Tau protein hyperphosphorylation in neonatal rat cortical neurons by suppressing the cyclin-dependent kinase 5(CDK5) pathway.Methods Neonatal Wistar rats born within 24 h were selected to separate and purify their cortical neurons for culture in vitro.After 7-day cult...