Posts: 1,252. Wales has the most castles per square miles; with the UK in general having many impressive structures, and interesting clan tales, if you're in the Scottish highlands. Also, Germany and Austria cannot be underestimated in this regard either, as Neuschwanstein is legendary.
The Mimivirus, a virus infecting Acanthamoeba polyphaga, was the largest DNA virus yet isolated (Claverie et al, 2006).
Description. Papaya ringspot virus (PRSV) is a type of potyvirus that infects papaya and a few closely related species. Potyviruses are the most economically damaging plant viruses.apaya ringspot virus (PRSV) is a type of potyvirus that infects papaya and a few closely related species.