Most species of bacteria can be broadly divided into two groups, known as gram-positive and gram-negative. These categories reflect big differences in the microbes' biology, and they also dictate ...

That process led to the group discovering a lasso peptide that exhibited broad-spectrum antibiotic activity and was effective ...

This medium is both selective and differential. The selective ingredients are the bile salts and the dye, crystal violet which inhibit the growth of Gram-positive bacteria. The differential ingredient ...

While developing effective antibiotics against gram-positive bacteria is relatively straightforward, gram-negative bacteria present a greater challenge due to their extra protective membrane ...

Today you will finish up testing for both gram positive and gram negative organisms. There are few tests that can be read immediately that we call rapid tests. These are often useful initial steps to ...

Medical honey proves effective against antibiotic-resistant bacteria, transforming wound care and offering hope in the fight against antimicrobial.

His work led to the discovery of tyrothricin and gramicidin from Bacillus brevis, which were both potent against gram positive bacteria but were too toxic to use in humans. In 1939, encouraged by ...

In gram-negative bacteria, the most common mechanism of resistance is the hydrolysis, or breaking apart, of the antibiotics by enzymes referred to as the beta-lactamases. There are two broad classes ...

Doxycycline has bacteriostatic activity against a broad range of Gram-positive and Gram-negative bacteria. Children ≤8yrs: weigh benefits vs. risks; reserve use only for severe or life ...