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  2. File:Leeuwenhoek-A Specimen of Some Observations Made by a ...

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  3. Antonie van Leeuwenhoek - Wikipedia

    en.wikipedia.org/wiki/Antonie_van_Leeuwenhoek

    Antonie Philips van Leeuwenhoek [note 2] FRS (/ ˈ ɑː n t ə n i v ɑː n ˈ l eɪ v ən h uː k,-h ʊ k / AHN-tə-nee vahn LAY-vən-hook, -⁠huuk; Dutch: [ˈɑntoːni vɑn ˈleːu.ə(n)ˌɦuk] ⓘ; 24 October 1632 – 26 August 1723) was a Dutch microbiologist and microscopist in the Golden Age of Dutch science and technology.

  4. Gram stain - Wikipedia

    en.wikipedia.org/wiki/Gram_stain

    Gram staining is almost always the first step in the identification of a bacterial group. While Gram staining is a valuable diagnostic tool in both clinical and research settings, not all bacteria can be definitively classified by this technique. This gives rise to gram-variable and gram-indeterminate groups.

  5. Microorganism - Wikipedia

    en.wikipedia.org/wiki/Microorganism

    A microorganism, or microbe, [a] is an organism of microscopic size, which may exist in its single-celled form or as a colony of cells.. The possible existence of unseen microbial life was suspected from ancient times, such as in Jain scriptures from sixth century BC India.

  6. Griffith's experiment - Wikipedia

    en.wikipedia.org/wiki/Griffith's_experiment

    Griffith's experiment discovering the "transforming principle" in Streptococcus pneumoniae (pneumococcal) bacteria. Griffith's experiment, [1] performed by Frederick Griffith and reported in 1928, [2] was the first experiment suggesting that bacteria are capable of transferring genetic information through a process known as transformation.

  7. List of experiments - Wikipedia

    en.wikipedia.org/wiki/List_of_experiments

    Robert Hooke, using a microscope, observes cells (1665). Anton van Leeuwenhoek discovers microorganisms (1674–1676). James Lind, publishes 'A Treatise of the Scurvy' which describes a controlled shipboard experiment using two identical populations but with only one variable, the consumption of citrus fruit (1753).

  8. Bacteriology - Wikipedia

    en.wikipedia.org/wiki/Bacteriology

    Bacteriology is the study of bacteria and their relation to medicine. Bacteriology evolved from physicians needing to apply the germ theory to address the concerns relating to disease spreading in hospitals the 19th century. [5] Identification and characterizing of bacteria being associated to diseases led to advances in pathogenic bacteriology.

  9. Medical microbiology - Wikipedia

    en.wikipedia.org/wiki/Medical_microbiology

    Anton van Leeuwenhoek was the first to observe microorganisms using a microscope. Statue of Robert Koch, father of medical bacteriology, [2] at Robert-Koch-Platz (Robert Koch square) in Berlin. In 1676, Anton van Leeuwenhoek observed bacteria and other microorganisms, using a single-lens microscope of his own design. [3]