some bacteria remained blue or purple, while others did not retain the stain. The first group was dubbed "gram-positive," while the latter was designated "gram-negative." Related: Dangerous ...

This is a test commonly used when trying to identify Gram-negative enteric bacteria, all of which are glucose fermenters ... added Kovac’s reagent to form rosindole dye which is red in color (indole + ...

To mimic the background color of this book cover, Grosser chose a MacConkey agar plate, which contains crystal violet dye and a neutral red pH indicator. Because MacConkey agar allows only ...

Bacteria can be engineered to sense a variety of molecules, such as pollutants or soil nutrients. In most cases, however, these signals can only be detected by looking at the cells under a microscope ...

Three of these six pathogens are antibiotic-resistant Gram-negative bacteria. Recently, antibacterial drugs against ESBL-producing Gram-negative bacteria accounted for ∼15% (2 out of 13 ...

All patients with suspected Gram-negative endocarditis should undergo transesophageal echocardiography (TEE) to confirm the diagnosis and assess for cardiac complications such as intracardiac ...