Retroviruses are RNA-containing viruses that use the enzyme reverse transcriptase to copy their RNA into the DNA of a host cell. Retroviruses have been isolated from a variety of vertebrate species, including humans, other mammals, reptiles, and fish....

Retroviruses are viruses in which the genetic material consists of ribonucleic acid (RNA) instead of the usual deoxyribonucleic acid (DNA). Retroviruses produce an enzyme known as reverse transcriptase that can transform RNA into DNA, which can then be...

Retroviruses belong to the family of viruses known as Retroviridae. Viruses are infective particles composed of a nucleic acid, a protein coat called a capsid, and sometimes an enzyme. Viruses are classified as DNA (deoxyribonucleic acid) viruses or...

A retrovirus is defined as any of a group of viruses that, unlike most other viruses and all cellular organisms, carry their genetic blueprint in the form of ribonucleic acid (RNA). Retroviruses are responsible for certain cancers and virus infections...

A retrovirus is any virus belonging to the viral family Retroviridae. They are enveloped viruses possessing an RNA genome, and replicate via a DNA intermediate. Retroviruses rely on the enzyme reverse transcriptase to perform the reverse transcription...

Feline immunodeficiency virus (FIV) and feline leukemia virus (FeLV): These retroviruses represent two of the most important infectious disease agents of cats. A recent large survey shows that the prevalence of each virus in the cat opulation is about 3%.1* And while the American...

Agricultural Research Service scientists are attempting to genetically engineer sheep that are resistant to the visna virus, a retrovirus that causes ovine progressive pneumonia. Scientist Caird E. Rexroad explained that a research team introduced genes necessary for recognizing the virus' outer coat and turning...