A) made toxic to antibiotic resistant strains of Mycobacterium tuberculosis. B) made into an anti-malarial compound by site directed mutagenesis of the wormwood genome. C) made toxic to the pathogenic bacterium that cause tumours in immune deficient patients. D) produced more efficiently in yeast than it can be produced from its natural source in plants. E) used as a control molecule in a repressilator system than mimics natural chemical rhythms.