A change to a single gene in the bacterium Yersinia pestis has enabled one of the world’s most notorious pathogens to survive ...

causing them to have a blue color when a person views them under a microscope. Gram-positive bacteria can be cocci- (spheres) or bacilli- (rod) shaped, or have branching filaments. Gram-negative ...

Bacteria with thick peptidoglycan are called gram positive. If the peptidoglycan layer is thin, it's classified as gram negative. A gram-positive bacillus doesn't have an outer cell wall beyond ...

Researchers have created a pipeline for discovering unique combinations of molecules that increase the effectiveness of antibiotics against drug-resistant bacteria. The team, led by scientists at ...

But what are the differences between gram-positive and gram-negative bacteria ... Gram developed a staining procedure to view bacteria under the microscope. First, he applied a dye, called ...

Gram-positive and gram-negative bacteria differ in the composition of their cell walls. Gram-negative bacteria have a double layer of protection, making them more difficult to kill, Muñoz said.

A team led by Paul Hergenrother at the University of Illinois Urbana-Champaign has discovered a new antibiotic that exclusively targets gram-negative bacteria and avoids wiping out the ecosystem ...

Gram-positive bacteria, such as Staphylococcus, appear blue or purple under a microscope when scientists apply a stain. Conversely, Gram-negative bacteria do not hold the dye well. Gram-negative ...

Bacterial species, and even specific strains can be differentiated using a number of molecular techniques such as PCR, quantitative PCR, genome sequencing and mass spectrometry. But even without ...