According to this theory the acid might help the virus penetrate cell walls, to multiply within the cells and eventually to kill them.

It is thought to help the virus penetrate a cell.

Julia's nodes showed her the second-level guardian programs falling as the virus penetrated.

That may be one route by which the virus penetrates the body.

Unlike animal cells, plant cells have robust cell walls, which viruses cannot easily penetrate.

The person would have been a homosexual with a stomach ulcer or abscess through which the virus could have penetrated his circulation.

Lactoferrin also suppresses virus replication after the virus penetrated into the cell.

No one knows if the virus can penetrate the lining of the male urethra, the tubelike passage through which urine flows.

The question of how viruses penetrate cells is central to understanding viral diseases.

But what if viruses, worms or other forms of malware penetrated the computers that control ever more crucial functions in the car?