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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.
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 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 ...
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]
The adjectives gram-positive and gram-negative derive from the surname of Hans Christian Gram; as eponymous adjectives, their initial letter can be either capital G or lower-case g, depending on which style guide (e.g., that of the CDC), if any, governs the document being written. [24]
Gramella – Hans Christian Gram, a Danish pharmacologist and pathologist; Grimontia – Patrick A. D. Grimont, a French microbiologist; Guggenheimella – Bernhard Guggenheim, a Swiss microbiologist; Gulbenkiania – Calouste Gulbenkian, a Portuguese protector of the arts and sciences
The Gram stain, developed in 1884 by Hans Christian Gram, characterises bacteria based on the structural characteristics of their cell walls. [175] [75] The thick layers of peptidoglycan in the "Gram-positive" cell wall stain purple, while the thin "Gram-negative" cell wall appears pink. [175]
Hans Gram may refer to: Hans Christian Gram (1853–1938), Danish scientist who invented Gram staining; Hans Gram (composer) (1754-1804), Danish-American composer and ...