Most species of bacteria can be broadly divided into two groups, known as gram-positive and gram-negative. These categories ...

Infectious bacteria are growing increasingly resistant to drugs, which is becoming a serious threat to public health worldwide. Bacteria can be classified based on various characteristics, such as by ...

Gram-negative bacteria are harder to kill because of their harder cell wall. When their cell wall is disturbed, gram-negative bacteria release endotoxins that can make your symptoms worse.

Cell wall: These bacteria also have a thinner peptidoglycan cell wall than Gram-positive bacteria, which sits between their two membranes. Shape: They can be spherical-, rod-, or spiral-shaped.

Peptidoglycan layer: In Gram-positive bacteria, the peptidoglycan is a 20 to 80 nm (nanometer) thick structure found within its cell wall. This layer is only 2 to 3 nm thick in Gram-negative bacteria.

Gram-positive bacteria are bacteria with thick cell walls. In a Gram stain test, these organisms yield a positive result. Here’s why knowing whether the result is positive or negative is important.

Tominari, T., et al. (2021) Gram-positive bacteria cell wall-derived lipoteichoic acid induces inflammatory alveolar bone loss through prostaglandin E production in osteoblasts. Scientific Reports ...

Researchers from the National University of Singapore (NUS) have solved a 60-year-old mystery in bacterial cell envelope ...

Instead, crystal violet seeps into the cracks of peptidoglycan, which acts like a “brick wall of sugar,” Wilhelm says. A gram-negative cell’s thin wall crumbles in the alcohol wash and ...