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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]
In Berlin, in 1884, Gram developed a method for distinguishing between two major classes of bacteria. [1] This technique, known as Gram staining, continues to be a standard procedure of medical microbiology. This work gained Gram an international reputation. The staining method later played a major role in classifying bacteria. Gram was a ...
Developed vaccination techniques against smallpox. [2] 1818–1865 Ignaz Semmelweis: Hungarian Demonstrated that doctors washing their hands with chlorine solution significantly reduced mortality of women giving birth in hospital setting. [4] 1853–1938 Hans Christian Gram: Danish Developed the Gram stain used to identify and classify bacteria ...
He developed a series of criteria around this that have become known as the Koch's postulates. [7] 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]
This staining process allows for the identification of gram-negative and gram positive bacteria. Gram-negative bacteria will stain a pink color due to the thin layer of peptidoglycan. If a bacteria stains purple, due to the thick layer of peptidoglycan, the bacteria is a gram-positive bacteria. [4] In clinical microbiology numerous other ...
The New Year is starting with a fresh warning for those who work with animals in Texas. The state's Parks and Wildlife Department is asking hunters and other outdoor enthusiasts to watch out for ...
In 2012, investigators seemingly brought long-awaited closure to one of the nation's oldest and most high-profile kidnapping cases, solving it after more than 50 years.
"Still, scientific research is continually finding new ataxia gene mutations and new environmental stressors that will ultimately answer the question of causation for everyone who has ataxia ...