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Q: Why cant you gram stain e coli and salmonella?
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What color is E coli when stained?

If you are talking about a Gram Stain, then red. E. coli is Gram negative which means that Safranin will stain it red during a gram stain.


Is salmonella typhimurium gram positive?

It is gram negative


What will you see of a gram stain of e coli?

E. coli is a gram negative bacteria, meaning that it has a cytoplasmic lipid membrane, a peptidoglycan layer, and a (LPS) lipopolysaccharide layer. As a result, e. coli stains a pink colour on a gram stain from the counterstain saffranin. Gram positives stain purple retain the crystal violet dye even after washed with a decolouring solution.


What is the Gram stain result of Salmonella?

Gram Negative.


What is the arrangement of echoli cell under gram stain?

e. coli stains Gram negative.


What shape is e coli?

Salmonella is a Gram Negative Rod


Are Escherichia coli gram-negative?

Yes, E. coli are Gram negative.


What is ceram neg bacilli?

I think you mean gram negative bacilli. They get their name as those who do not retain crystal violet dye in the gram staining protocol. Many gram negative bacteria are pathenogenic or disease causing. e-coli and salmonella are gram negative bacteria.


What is the micro organism that causes salmonella?

The microorganism is called Escherichia coli, and is usually abbreiviated "E. coli". The organism is classified as a gram negative bacterium, and it is rod-shaped. It normally lives in the gut of mammals. See the wiki page on Escherichia coli for more info.


What is importance of Gram staining in medical setting?

To determine which pathogen you are dealing with. Bacteria with a thick peptidoglycan layer stain gram positive (like staphylococcus aureus) while bacteria with a thin layer stain gram negative (like escherichia coli)


What is determined of the Gram Stain?

A gram stain is a cow


Is Salmonella typhi gram positive or gram negative bacteria?

Salmonella typhimurium is a Gram-negative, rod-shaped bacterium.