Safranin is a biological stain used in microscopy to highlight structures in cell samples, particularly for staining gram-negative bacteria and plant tissues. It is a cationic dye that binds to negatively charged components, making it invaluable in differentiating between cell types and structures in histological studies.

Safranin

Biological Stain

Microscopy is the technical field of using microscopes to view objects and areas of objects that cannot be seen with the naked eye, enabling the study of cells, microorganisms, and nanostructures. It encompasses various techniques and technologies, including optical, electron, and scanning probe microscopy, each with unique applications and resolution capabilities.

Microscopy

Cell samples

Gram-negative bacteria are characterized by their unique cell wall structure, which includes a thin peptidoglycan layer and an outer membrane containing lipopolysaccharides. This structure contributes to their resistance to certain antibiotics and their ability to cause severe infections in humans.

Concepts

Your Lessons