Question

retrovirus are disarmed before using to deliver desirable genes into animal cells why ​

Answer 1

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Retroviruses are disarmed before used to deliver desirable genes into human cells because in animals, they have the ability to transform normal cell into cancerous cell.

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Answer 2

Rotavirus is a genus of double-stranded RNA viruses in the family Reoviridae. Rotaviruses are the most common cause of diarrhoeal disease among infants and young children. Nearly every child in the world is infected with a rotavirus at least once by the age of fiveMost adults build up immunity during childhood, so they are less susceptible to rotavirus. However, adults can catch it, especially if they have a compromised immune system, if they are traveling in a place where the virus is common, or if they are exposed to an epidemic. An adult can also catch the virus from a childThere's no specific medicine to treat rotavirus. Antibiotics can't touch it and neither can antiviral drugs. Your doctor may suggest medicine to help with the symptoms. Ask about rehydration fluids to replace minerals lost through vomiting and diarrhea.How long rotavirus lasts. During the course of the infection, your child might first get a fever and vomit. Watery diarrhea can then occur between three and seven days thereafter. The infection itself can last for 10 days in your stool after your symptoms go away.