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Gram stain (Gram staining or Gram's method), is a method of staining used to classify bacterial species into two large groups: gram-positive bacteria and gram-negative bacteria. It may also be used to diagnose a fungal infection. [1] The name comes from the Danish bacteriologist Hans Christian Gram, who developed the technique in 1884. [2]
Hans Christian Joachim Gram (13 September 1853 – 14 November 1938) was a Danish bacteriologist noted for his development of the Gram stain, still a standard technique to classify bacteria and make them more visible under a microscope.
A major milestone in medical microbiology is the Gram stain. In 1884 Hans Christian Gram developed the method of staining bacteria to make them more visible and differentiated under a microscope. This technique is widely used today. [8] In 1910 Paul Ehrlich tested multiple combinations of arsenic based chemicals on infected rabbits with ...
Hans Christian Gram: Danish Developed the Gram stain used to identify and classify bacteria. [2] 1845–1922 Charles Lavaran: French 1907 Nobel Prize in Physiology or Medicine for discovering the causative agents of malaria and trypanosomiasis. [2] 1827–1912 Joseph Lister: English Introduced sterilisation techniques to surgery. [2] [5] 1822 ...
Consequently, the need to identify human pathogens was a major impetus for the development of techniques to identify bacteria. [177] The Gram stain, developed in 1884 by Hans Christian Gram, characterises bacteria based on the structural characteristics of their cell walls.
Hans Christian Joachim Gram was a Danish bacteriologist who developed the Gram stain. This stain is still a standard technique used to classify bacteria, by making them more visible under a microscope, to the present day. [8]
Gram's great-grandfather [21] was Hans Christian Gram who developed the Gram stain, a commonly used technique in microbial ecology. [22] Gram is also distantly related to the Danish historian Hans Gram. [2]
Starch is a substance common to most plant cells and so a weak iodine solution will stain starch present in the cells. Iodine is one component in the staining technique known as Gram staining, used in microbiology. Used as a mordant in Gram's staining, iodine enhances the entrance of the dye through the pores present in the cell wall/membrane.