Megavirus: Virus So Large You Can See It with a Light Microscope

Meet Megavirus chilensis, a virus so big that it's actually larger than some bacteria:

The particle measures about 0.7 micrometres (thousandths of a millimetre) in diameter.

"It is bigger than some bacteria," explained Prof Jean-Michel Claverie, from Aix-Marseille University, Marseille, France.

"You don't need an electron microscope to see it; you can see it with an ordinary light microscope," he told BBC News.

In the lab experiments conducted by Professor Claverie and colleagues, in which they infected fresh-water amoebas, Megavirus was seen to construct large trojan organelles - the "cells within cells" that would produce new viruses to infect other amoebas.


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