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Jun 26, 1476
girolamo fracastoro
he projected that epidemic diseases are caused by transferable tiny particles or "spores" that could spread infection by direct or indirect contact or even without contact over long distances. -
Francesco Redi
Francesco Redi was an Italian physician, naturalist, and poet. He was the first scientist to challenge the theory of spontaneous generation by demonstrating that maggots come from eggs of flies. -
Anton van Leeuwenhoek
He was the first to observe and describe single-celled organisms, which he originally referred to as animalcules, and which are now referred to as microorganisms. -
John Needham
He proposed spontaneous generation because of an experiment he preformed where he boiled a broth and days later microbes would grow. -
Lazzaro Spallanzani
Lazzaro Spallanzani was an Italian Catholic priest, biologist and physiologist who made important contributions to the experimental study of bodily functions, animal reproduction, and essentially animal echolocation. His research of biogenesis paved the way for the downfall of preformationism theory. -
Edward Jenner
Edward was an English physician and scientist from Berkeley, Gloucestershire, who was the pioneer of the smallpox vaccine. His work with smallpox has saved many lives and is said to have saved more lives than any other man. -
Theodor Schwann
Theodor Schwann as a German physiologist. His many contributions to biology include the development of cell theory, the discovery of Schwann cells in the peripheral nervous system, the discovery and study of pepsin, the discovery of the organic nature of yeast, and the invention of the term metabolism -
Ignaz Semmelweis
Ignaz first connected the high death rate of women in the clinic to the puerperal fever. He realized that the fever was spread to many women in the clinic because doctors would not sterilize their hands between examining patients and autopsies. Once he mandated that all doctors wash their hands with a chlorine based solution, deaths began to decrease dramatically. -
John Tyndall
His initial scientific fame arose in the 1850s from his study of diamagnetism. Later he made a number of discoveries in the realms of infrared radiation and the physical properties of air. -
Louis Pasteur
He reduced mortality from puerperal fever, and created the first vaccines for rabies and anthrax. He created vaccines by infecting chickens with dead bacteria and noticed that the chickens didn't get sick. -
Louis Pasteur
Louis Pasteur was a French chemist and microbiologist who is well known for pasteurization, process of heating a food, which is usually a liquid, to a specific temperature for a predefined length of time and then immediately cooling it after it is removed from the heat, to prevent spoiling. -
Theodor von Dusch
he demonstrated that a filter made of cotton-wool was effective in removing microbes such as bacteria from air. -
Joseph Lister
Joseph is credited with introducing the idea of sterilizing eguipment and wounds. -
Friedrich Schroder
Friedrich Schroder experimented to counter arguments that air was needed for spontaneous generation by aloowing air to enter a flask of solution only after the air passed through sterile cotton wool. -
Robert Koch
Robert's worked revolved around bacteria and other micro organisms. He did alot of work involving diaseases such as TB and their causatives. From his research with disease he developed the Koch Postulates which are the standard of linking microbes to diseases. -
Charles Chamberland
He created a filtration system that would filter out bacteria in a solution by using a porcelain bar that had holes that were smaller than bacteria -
Oswald Avery, Colin MacLeod, and Maclyn McCarty
Oswald Avery, Colin MacLeod, and Maclyn McCarty show that DNA is the transforming material in cells. They demonstrate that the transformation of Streptococcus pneumoniae from an avirulent type to a virulent type is the result of the transfer of DNA from dead smooth organisms to live rough ones -
Aristotle
384 BC Aristotle was one of the first to classify animals. He classified animals based on physical characteristics and purpose. he even seperated mammals, whales, from fish.
