In 1590 Hans Lippershey and Zacharias Jansen Invented the microscope
Zacharias Jansen, a Dutch eyeglass maker invents the first compound microscope in 1590
Anton Van Lee Leeuwenhoek discover Protozoa and called it animalcules he also improved the microscope and laid the foundation for microbiology in 1665.
Robert Hooke discovered that cork was made of cells and he discovered cells in 1665
In 1665 Robert Hooke discovered the cell theory but The first cell theory is credited to the work of Theodor Schwann and Matthias Jakob Schleiden in the 1830s.
Mattias Schleiden found that all plants are made of cells in 1881