Introduction to natural products- Chemical nature of natural products produced by microorganisms- Diversity of natural products of microorganisms- natural products produced by bacteria, fungi and algae. Methods of extractiosn of natural products from microorganisms- Growth optimization of microorganisms for production of natural products- Evaluation of the the biological activitities of natural products produced by microorganisms (e.g. antiviral- antibacterial, antifungal, anticancer, antiparasitic and antioxidant) Therapeutic index of natural products produced by microorgansims