Caspase-9 was activated significantly in HHV-6Ainfected cells ,
Moreover , HHV-6A infection upregulated Bax and downregulated Bcl-2 .
Caspase-9 was activated significantly in HHV-6Ainfected cells , whereas caspase-8 was not activated obviously .
Moreover , HHV-6A infection upregulated Bax and downregulated Bcl-2 .