But Philet0ast3r's viruses, like those of many malware writers, are often surprisingly mild things carrying goofy payloads.

Ever since it was found that some viruses carry snippets of genetic material from host to host.

Gene therapy often uses genetically engineered viruses to carry the desired gene into patients' cells.

The virus carries DNA polymerase which is used to transcribe its genes.

The viruses are potentially hazardous to sanitation workers and others through ground water or when carried by flies.

Most surveys of homosexual men find that from 20 to 50 percent now carry the virus (in New York City 36 percent).

The gene therapy used viruses to carry the therapeutic cells into the children's blood-forming stem cells.

Until that time, it was thought that these viruses carried certain genes called oncogenes which, when inserted into the host's genome, would cause cancer.

Mr. Gardner might well say that the anti-leadership virus has carried the day.

Gene therapy often uses partly disabled viruses to carry genes into human cells to correct gene defects.