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...Phytochemicals extraction methods basic structures and mode of action as potential chemotherapeutic agents james hamuel doughari department microbiology school pure applied sciences federal university technology yola nigeria introduction medicinal plants have been the mainstay traditional herbal medicine amongst rural dwellers worldwide since antiquity to date therapeutic use certainly goes back sumerian akkadian civilizations in about third millenium bc hippocrates ca one ancient authors who described natural products plant animal origins listed approximately different species for purposes an integral part systems e g chinese ayurvedic egyptian sarker nahar over years they assumed a very central stage modern civilization source chemotherapy well scientist search alternative sources drugs billion people developing world depend on based medicines this represents per cent s inhabitants rely mainly their primary health care according organization is any which or more its organs contains s...