oct 21, 1676 - Anton van Leeuwenhoek
Description:
Anton van Leeuwenhoek built and improved microscopes. While observing pond water he discovered single-celled organisms that he called animalcules. He also was one of the first people to observe bacteria cells. This contributed to the cell theory by discovering organisms with one cell.Added to timeline:
Date:
oct 21, 1676
Now
~ 347 years ago
