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How the Gram stain identifies bacteria

Posted on August 19, 2021August 19, 2021 By hardydiagnosticsadmin
How the Gram stain identifies bacteria

In 1884, Danish microbiologist Hans Christian Gram discovered that crystal violet irreversibly stained certain bacteria but can be washed from others. The Gram stain technique identifies bacteria as gram-positive (the stain is retained) or gram-negative (the stain is washed away.) Gram found that his stain worked for visualizing a series of bacteria associated with disease…

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Micro Musings

Serogrouping of Strep:The Legacy of Rebecca Lancefield

Posted on March 29, 2017August 12, 2021 By hardydiagnosticsadmin

  Some species of streptococci are unique in that they are classified or grouped according to the antigenic structure of their cell walls. Ever wondered how this was discovered? In this article, we will explore the history of how strep grouping came to be in common usage today. The genus Streptococcus contains many pathogens from…

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