Scientists say they have greatly advanced the possibility of being able to reproduce the body's organs via the use of 3D printing. Replacement organs could be created using a new technique for bio-printing organic tissue. This allows scientists to create networks of thin tubes and vessels, like those used in our body for the flow of blood and air. These are called vascular networks. Bio-engineering professor Jordan Miller explained why the breakthrough was so important. He said: "One of the biggest roadblocks to generating functional tissue replacements has been our inability to print the complex [vascular networks] that can supply nutrients to densely populated tissues."
Professor Kelly Stevens of the University of Washington wrote about the difficulties scientists had in recreating a vascular network. She said: "Tissue engineering has struggled with this for a generation." She believes the new breakthrough will allow medical practices to change in the future. She asked: "If we can print tissues that look and now even breathe more like the healthy tissues in our bodies, will they also then functionally behave more like those tissues?" Professor Stevens said "This is an important question, because how well a bio-printed tissue functions will affect how successful it will be as a therapy." Scientists hope this method will help millions of people waiting for an organ transplant.
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1. advanced a. A substance that provides nourishment essential for growth and the maintenance of life.
2. reproduce b. A part of an animal or human that is self-contained and has a specific vital function, such as the heart or liver.
3. organ c. A tube or canal holding or transporting blood or other fluids.
4. tissue d. Made or caused to make progress.
5. vessel e. Move along or out steadily and continuously in a current or stream.
6. flow f. Creates something very similar to something else.
7. nutrient g. Any of the types of material of which animals or plants are made.
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8. struggled h. Act or conduct oneself in a specified way, especially toward others.
9. generation i. Work or operate in a proper or particular way.
10. breakthrough j. A surgical operation in which an organ or tissue is taken out and replaced.
11. behave k. All of the people born and living at about the same time, regarded collectively.
12. function l. Treatment intended to relieve or heal a disorder.
13. therapy m. A sudden, dramatic, and important discovery or development.
14. transplant n. Striving to achieve or attain something in the face of difficulty or resistance.
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