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Jan Baptist Van Helmont
Jan Baptist Van Helmont contributed by contrubating to photosynthesis. He devolped the idea that plants don't get nutrence from soil. He accepted the idea of spontanious generation, but he also insisted that nature could only be learned about throught experiment. -
Robert Hooke
Robert Hooke observed a cork through a microscope, he saw tiny boxlike cavities. Which, later came to be known as plant cells. Hooke's discovery led to the understanding of cells as the smallest units of life. Because he couldsee that microorganisms were made up of cells and they didn't come from human flesh or dirt like some people believed, he rejected spontanious generation. -
Anton Van Leeuwenhoek
Anton Van Leeuwenhoek discovered plant anatomy and he was a expert on animal reproduction. He discovered blood cells and microscopic nematodes. His research on the growth of flees, and mussels helped disprove spontanious generation. -
Lorenz Oken
Lorenz Oken stated that "All living things come from and are made of cells." He also said, "World and organisms are one in kind and do not stand merely in harmony with each other." These quotes eventually helped disprove spontanious combustion. -
Robert Brown
Robert Brown discovered the nucleus and it's role helped piece together cell theory. He helped discover that all living organisms are made of cells, and all cells come from pre-existing cells. Browns discovery helped confirm part of the cell theory. -
Matthias Schleiden
Matthias Schieden decovered the cell as the basic unit of plant structure, he later decovered the cell as the basic unit for the animal structure. This goes against spontanious generation. -
Theodor Schwann
Theodor Schwann discroved that tissues are made up of cells, which in a way laid foundations for cell theory. He also worked with fermentation and discovered the enzyme pepsin. Schwann cells are named after him. He discovered that maggots did not appear in the meat unless flies were present. Which meant spontanious generation couldn't be true. -
Albercht Von Roeliker
Albercht Von Roeliker discovered that sperm and eggs are also cells. This helped the theory that believed everything came from pre-exising cells. Which, also helped prove that spontanious generation couldn't be possible. -
Rudolf Virchow
Rudolf Virchow used the theory that all cells are created from other cells to create the groundwork for cellular pathology, the study of disease at the cellular level. His work led to more accuracy in diagnosing diseases. The idea of spontanious way rejected in pathology. -
Louis Pasteur
Louis Pasteur invented the swan neck flask to create an enviorment known not to grow microorganisms. He did this by creating an experiment that showed that cell would only grow if the broth if air was exposed. Microorganisms only grew in the controls, refuting spontanious generation. -
Zacharias Janssen
Zacharias Janssen invented the compound optical microscope in the 1950s. He contributed to Cell theory by making it easier to observe cells. He also declared cells were the building blocks to plants. His invention helped reject spontanious generation by helping future sciencists observe cells up close.