The world is always on the lookout for new drugs - but they're not easy to make. Synthesising them is often an expensive and prolonged process. But what if we could employ a miniature assistant to do it for us? That's what a team from the MRC Laboratory of Molecular Biology have come up with. They're managed to genetically reprogramme living cells to build complex molecules - molecules that no living thing would ever normally produce. Phil Sansom learned how from researcher Jason Chin... Like this podcast? Please help us by supporting the Naked Scientists