In contrast to direct stains that bind to bacteria directly, a negative stain colors the background of a smear rather than the bacteria. These stains have negatively charged functional groups so they ...

Electron microscopes and modern computer image processing allowed University of Tokyo researchers to uncover the correct structure of a protein essential in the immune system, IgM, and a much ...

The cell wall of most bacteria has an overall net negative charge and thus can be stained directly with a single basic (positively charged) stain or dye. This type of stain allows us to observe the ...