👉 Counterstain is a type of staining technique used in medical imaging, specifically for the detection and identification of microorganisms on the surface of tissue samples. It involves using a special stain that inhibits the growth of bacteria or other microbes, making them difficult to visualize. The process typically involves placing a thin layer of the counterstain over the area of interest and then exposing it to an ultraviolet light source. The light is focused onto the sample, causing the microorganisms within the tissue to fluores
