A differential stain that divides bacteria into two groups, gram-positive and gram-negative based on the ability to retain crystal violet when decolorized with an organic solvent such as ethanol.
A routine stain used for the laboratory identification of bacteria.
procedure used for identification of bacteria in which crystal violet stain, Gram's iodine, ethyl alcohol and safranin stain are applied in succession to cells of the bacteria
A standard staining method which distinguishes between two different bacterial cell walls
A laboratory procedure that uses stains and colors to tell the difference between different cells.
a staining technique used to classify bacteria; bacteria are stained with gentian violet and then treated with Gram's solution; after being decolorized with alcohol and treated with safranine and washed in water, those that retain the gentian violet are gram-positive and those that do not retain it are gram-negative
a method of dying bacteria so that they can be identified
a method of staining microorganisms (bacteria) using a special series of stains
a rapid microscopic analysis that can be invaluable at pinpointing infection and defining the bacterial type of infection involved so that appropriate antibiotic therapy can be begun
a rough (an I do mean very rough) estimate of the bacterial flora on the place the swab was taken (i
a test that is done on body fluids, wounds, pus, etc to look for specific types of bacteria
a method used to identify bacteria by injecting a crystal violet stain that is either lost or retained when the bacteria are rinsed, depending on the characteristics of the bacterial cell wall.
a procedure for staining bacteria that is the first step in classifying and identifying them.
Differential staining procedure that allows categorization of bacteria into two groups (gram-positive and gram-negative) based on their ability to retain crystal violet when decolorized with an organic solvent such as ethanol.
An important bacteriological staining procedure discovered empirically in 1884 by the Danish scientist Christian Gram. When bacteria are stained with certain basic dyes, the cells of some species (Gram-negative species) can be easily decolorized with organic solvents such as ethanol or acetone. Cells of Gram-positive species resist decolorization. ( 16)
