SV40 is an abbreviation for Simian vacuolating virus 40 or Simian virus 40, a polyomavirus that's found in both monkeys and humans. Like other polyomaviruses, SV40 is a DNA virus that has the potential to cause tumors, but most often persists as a latent infection. The virion is a naked icosahedral virion that consists of a closed circular dsDNA which is has 5kb. The virion adheres to cell surface receptors MHC class 1 by the virion glycoprotein VP1. Penetration into the cell is throug a caveol… (More on Sv40)