what is a capsule stain
THE CAPSULE STAIN. The capsule is a thick polysaccharide layer around the outside of the cell. It is nonionic, so. the dyes that we commonly use will not bind to it. Two dyes, one acidic and one basic, are. used to stain the background and the cell wall, respectively. The area between the 2 dyes is. the halo of the capsule surrounding the cell.