Modified from Barbero GJ: Recurrent abdominal pain. Pediatrics in Review 4:30, 1982 and from Greenberger NJ: Sorting through nonsurgical causes of acute abdominal pain. Journal of Critical Illness7:1602â1609, 1992.
Early Modern. Antonie van Leeuwenhoek is considered a father of microbiology as he pioneered the use of simple single-lensed microscopes of his own design. In 1676, Anton van Leeuwenhoek, who lived most of his life in Delft, Holland, observed bacteria and other microorganisms using a single-lens microscope of his own design.
Ferdinand Cohn was also the first to formulate a scheme for the taxonomic classification of bacteria. Louis Pasteur (1822â1895) and Robert Koch (1843â1910) were contemporaries of Cohnâs and are often considered to be the founders of medical microbiology. Pasteur is most famous for his series of experiments designed to disprove the then widely held theory of spontaneous generation, thereby solidifying microbiologyâs identity as a biological science.