who discovered this?
Charles Chamberland
Introduction to viruses
Charles Chamberland
what is introduction to viruses? It is a tiny infectious agent that reproduces inside the cells of living hosts.
wiki:2294633
Introduction to viruses [SEP] Discovery
In 1884, French microbiologist Charles Chamberland invented the Chamberland filter (or Chamberland–Pasteur filter), that contains pores smaller than bacteria. He could then pass a solution containing bacteria through the filter, and completely remove them. In the early 1890s, Russian biologist Dmitri Ivanovsky used this method to study what became known as the tobacco mosaic virus. His experiments showed that extracts from the crushed leaves of infected tobacco plants remain infectious after filtration. At the same time, several other scientists showed that, although these agents (later called viruses) were different from bacteria and about one hundred times smaller, they could still cause disease.