In 1673, Anton van Leeuwenhoek, observed cells from all places, which gave him different cells to observe. He looked at lake water,samples from teeth and gums. He observed all of these from under his own microscope. He helped form the part of The Cell Theory that states what cells are basic structures and functions of all living things.
A Dutch tradesman and scientist, Anton van Leeuwenhoek, observes different types of cells.
Anton was the first person to observe and describe a single celled organism using a handcrafted microscope, made by Zacharias Janssen.
Using a microscope, he began to examine different animals. He looked at blood cells from fish, birds, and frogs. Also he had examined human blood cells too.
Anton also made use of a microscope containing improved lenses that could magnify 270X. He named them "animalcules" which included protozoa and other unicellular organisms, like bacteria.
Later, in 1676, Anton's discoveries had surprised him to see tiny organisms. His letter he had put out to public caused widespread. Robert Hooke then later repeated the experiment and was able to confirmed his discoveries.
wow! that is how doctors find out DNA and others!
There kids is how we know who discovered our bacteria, Anton van Leeuwenhoek