From observation. Research studies We take advantage of human substances, bacteria build up and do, inhibit or stop the growth of microorganisms or other type of total on the broad use of the Charter may be invoked to destroy the bacteria or pathogenic disease. Does not specify which groups, which generally distinguish groups of bacteria. We check out the cell wall structure, which, if taken through the process of dyeing, it will stick to a color group called Gram positive (+) or minus (-) Gram.