Phát âm chuẩn cùng VOA – Anh ngữ đặc biệt: Computer Chips Human Organs (VOA)

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Computer chips acting like human organs? Seems hard to believe, but scientists are developing this kind of technology in the U.S. They are using the chips to test new drugs. Testing new drugs for safety and effectiveness is costly. It also can take a lot of time. But this new process could make it faster and more economical. Some scientists are now designing silicon computer chips that act like human organs. The silicon chips are smaller than a child’s hand. Each one has living cells that act and react like a human organ. The chips are part of a program to test the safety of drug compounds. It is called the Tissue Chip for Drug Screening Program. It is a project of the US National Center for Advancing Translational Sciences, or NCATS. The center’s associate director, Danilo Tagle, says a three-dimensional computer chip can be designed to act like a human lung. It could or can? be made to breathe and expand, and take in air and fluids(do lungs take in fluids?) just like a normal lung. Other computer chips contain very small models of the human digestive system. Drugs are added to the tiny organs for testing through instruments known as micro-tubes. Experiments with the tissue chips have produced more detailed information than tests using animal or cell models. NCATS just announced it won a $17 million award to develop an entire human organ system. Also, researchers at Columbia University are working on a project to combine models of the heart, liver and circulatory system. Scientists there hope to test how well some drugs work on heart and liver diseases. The scientists hope the chips will make the process of developing drugs simpler.

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