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jan 1, 1892 - Dmitri Ivanovsky discovered viruses while studying tobacco mosaic disease.

Description:

He demonstrated that sap from diseased tobacco plants remained infectious after filtration through Chamberland filters. These filters trap bacteria, but viruses are smaller and more resilient. His work aligned with biogenesis.

Added to timeline:

Date:

jan 1, 1892
Now
~ 134 years ago