21. Is it possible that research into new vaccines against cancer and other diseases could inadvertently create lethal human viruses ? 22. Dr . Cox said her team expected to see differences between the avian and human viruses at that junction. 23. Rose said . " Forty percent of all shrimp examined in the study yielded human viruses from contaminated waters ." 24. The fourth SIV strain, isolated from a different subspecies, Pan troglodyte schweinfurthii, is not a precursor to the human virus . 25. It is also the first virus the researchers looked at, raising the possibility that other human viruses may also cause obesity. 26. The proposed " Deltapolyomavirus " genus contains only the four human viruses shown, with human polyomavirus 6 as the type species. 27. Dr . Bernard Roizman, a leading virologist at the University of Chicago, said he had no doubts that they were human viruses . 28. Hepatitis delta virus ( HDV ) is a pathogenic human virus whose RNA genome and replication cycle resemble those of plant viroids. 29. "During the recent El Nino, human viruses were found to be transported for up to a mile into approved shellfish harvesting waters," 30. And pigs have receptors in their snouts not just for their own swine virus but for bird and human viruses as well.
