Pasteur, Hooke, Redi, Leeuwenhoek,Koch, Schwann,Shleiden and Virchow

Viewed cork through his compound microscope, he coined the phrase 'cell' after viewing the individual cell walls of the 'dead' cork. He also Discovered the theory of elasticity

Built microscopes as hobby. First person to observe single called animals (Protozoa) with a microscope.

German botanist that discovered what is known as HIS cell theory. Determined that plants were made up many cells.

Concluded that all animals are made of cells. This laid the basis for our current cell theory

He determined that cells can only come from other cells

All living things are composed of one or more cells

Cells are organisms, the basic units of structure and function in living things

New cells are produced from existing cells

Used meat in jars to determine where flies came from. The uncovered jars gathered many flies and maggots, the jars covered in gauze gathered flies and a couple maggots, the sealed jars gathered no flies or maggots.

Used various flasks and boiling techniques to study bacteria growth, and concluded that heating kills microbes ( a process called pasurization.)

The pathogen can be isolated from the diseased host and grown in pure culture. (When you get a vacination you get a weaker form of the antigen>)