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An effective and affordable treatment against malaria is still a challenge for medicine. Most contemporary drugs either are too expensive to produce or are not effective against resistant strains of the malaria parasite Plasmodium falciparum. The plant Artemisia annua L. is the source of artemisinin, an effective drug against malaria for which no resistant strains of the bacterium have been reported. However, the artemisinin content of A. annua is very low, which makes its production expensive. Here we report the use of transgenic technology to increase the artemisinin content of A. annua. We report the production of transgenic plants of A. annua into which we transferred 3-hydroxy-3-methylglutaryl CoA reductase (HMGR) gene from Catharanthus roseus (L.) G. Don using Agrobacterium-mediated gene transfer technology. Transgene integration and copy number were assessed by PCR and Southern hybridization …