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...

In bacteriology, gram-positive bacteria are bacteria that give a positive result in the Gram stain test, which is traditionally used to quickly classify...

counterstain is stain that makes cells or structures more visible, when not completely visible with the principal stain. Crystal violet stains both Gram positive...

Gram-negative bacteria are bacteria that unlike gram-positive bacteria do not retain the crystal violet stain used in the Gram staining method of bacterial...

rendering them resistant to conventional staining techniques like the Gram stain. After the Ziehl-Neelsen staining procedure using carbol fuchsin, acid-fast...

Christian Joachim Gram (13 September 1853 – 14 November 1938) was a Danish bacteriologist noted for his development of the Gram stain, still a standard...

inside the vagina should be obtained. These swabs can be tested for: Gram stain which shows the depletion of lactobacilli and overgrowth of Gardnerella...

to allow the organisms to multiply. If microbial growth is detected, a Gram stain is conducted from the culture bottle to confirm that organisms are present...

differential staining is the Gram stain. Gram staining uses two dyes: Crystal violet and Fuchsin or Safranin (the counterstain) to differentiate between Gram-positive...

the Gram stain, but they do not take the crystal violet well and thus appear light purple, which can still potentially result in an incorrect gram negative...