科学美国人60秒 SSS 2014-09-29（在线收听）

 East, they all ready participate in producing some of the most popular pain killer substances around, bear and wine. Now scientists analyze the east can also make some of the most powerful energizes. morphine.They work in the general natural chemical biology. Opium like morphine and codeine, natural for treating severe pain. But making these masses is easy, all these derive from the opium poppies and tens to hundreds and thousands of tons are needed to meet global needs. The crops can also be effected by climates, diseases and even political turmoils in the countries where the plants are grown which further limits the commercial production. To get around with these potential challenges, researchers have to turn to east and organize them that can be grown easily un-industrial scales. The scientists inserted into the east shells a hands for genes ...from the opium poppies. These genes are ..., the plants used to produce opium. After twigging the system to adjust to the relative amounts of the ..., the researchers could feed the east, the precursor chemical called fibbing and get pure morphine in return. The east can yet make opium from ... but with the bit more efforts and fewer more ...east may produce pain killers that prescriptions strain.