Lab stains are a type of dye used to identify and differentiate different types of cells and organisms. DYES, which is a 4 letter word, are used to color the cells and organisms so that they can be seen under a microscope. Eosins, a 6 letter word, are a type of dye that is used to stain tissue sections for microscopic examination. They are used to identify different types of cells and organisms in a sample.