Andrographis paniculata is used to treat infections and some diseases, often being used before antibiotics were created. Andrographolide is the important secondary metabolite from this plant. To improve the production of this secondary metabolite, various elicitors are used. An 'elicitor' may be defined as a substance which, when introduced in small concentration to a living cell system, initiates or improves the biosynthesis of specific compounds. Elicitation is the induced or enhanced biosynthesis of metabolites due to addition of trace amounts of elicitors. Clone selection will be...