Back to Nature at the 21 century. This books describes the medicinal importance of Rosemary, its tissue culture,phytochemical composition the antimicrobial activity of intact and callus extracts of this important medicinal plant. It contains a practical experiments regarding the inhibitory effects of extracts on pathogens infect skin. How rapidly extracts can heal induced injuries compared with skin ointments available in chemists. All these aspects and others are discussed and illustrated with photographs.