What Does Trypan Blue Bind to?

Upon entry into the cell, trypan blue binds to intracellular proteins thereby rendering the cells a bluish color. The trypan blue exclusion assay allows for a direct identification and enumeration of live (unstained) and dead (blue) cells in a given population.

How does trypan blue stain dead cells?

Trypan blue is a diazo dye that has been widely used to color dead tissues or cells selectively. The mechanism of trypan blue staining is based on it being negatively charged and not interacting with cells unless the membrane is damaged. ... Therefore, all the cells that exclude the dye are considered viable.

What is trypan blue and how does it work?

Trypan blue is a diazo dye that is widely used as a vital stain to selectively color dead tissues or cells blue. Due to its highly negatively charge nature, it is excluded from the intact cell membrane of viable cells. ... Once inside cell, trypan blue binds to intracellular proteins and render the cells a blue color.