staining reaction by increasing the staining power and selectivity of the dye. Progressive staining
is the process whereby microbial cells are stained in a definite sequence, in order that a satisfactory differential coloration of the cell may be achieved at the end of the correct time with the staining solution.
with this technique, the microbial cell is first over stained to obliteratethe cellulare desires, and the excess stain is removed or decolorized from unwanted part.
is the selective removal of excess stain from the tissue from microbial cells during regressive staining in order that a specific substance may be stained differentiallyh from the surrounding cell.
Differentiation is usually controlled visually by examination under the microscope
To observe the morphology, size, and arrangement of bacteria.
To differentiate one group of bacteria from the other group.
Biological stains are dyes used to stain micro-organisms.
Types of microbiological stains . Basic stains . Acidic stains . Neutral stains