This altered virus commandeers the plant's cellular machinery to produce more of the desired new protein.

The island experiment would be the first use among wild animals in the United States involving a genetically altered virus.

He began the experiments by injecting the altered virus into six rhesus monkeys.

Genetically altered viruses used as a vaccine for swine pseudo-rabies are already on sale.

Inoculating laboratory animals with an altered virus represents an added risk of creating a dangerous organism.

But first, scientists have to prove to themselves and to the Government that the altered virus will die quickly in the open.

In laboratory tests, the altered virus by itself died within three days, Dr. Wood said.

In animal experiments, 60 percent of tumors disappeared when injected with the altered cold virus.

They were altered viruses, reprogrammed to change the shape or density of bones.

There, the missing gene will be added to the marrow by infecting it with a genetically altered virus.