Here we have confirmed and extended such observations , showing that ( 1 ) this phenomenon is restricted to the variant A of HHV-6 : in fact two isolates belonging to the HHV-6 variant B ( BA92 and Z29 ) were neither able to infect any B cell line , independently of the EBV status , nor to induce the EBV genome expression .
here we have confirmed and extended such observations , showing that ( 1 ) this phenomenon is restricted to the variant a of hhv-6 : in fact two isolates belonging to the hhv-6 variant b ( ba92 and z29 ) were neither able to infect any b cell line , independently of the ebv status , nor to induce the ebv genome expression .
O O O O O O O O O O O O O O O O O O O O B-virus I-virus O B-virus O O O O O O O O B-virus O O O B-virus O B-virus O O O O O O O B-cell_line I-cell_line I-cell_line O O O O B-virus O O O O O O B-virus O O O