In addition , two out of three M10 -expressing CEM clones were also resistant to highly productive infection by a heterogeneous HIV-1 pool .
in addition , two out of three m10 -expressing cem clones were also resistant to highly productive infection by a heterogeneous hiv-1 pool .
O O O O O O O B-protein_molecule O O O O O O O O O O O O B-virus B-virus O O