Plastic tubing used in medical equipment could be coated with thin layers of bio-friendly proteins.

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On Tuesday, construction materials littered the front lawn of the house and plastic tubing snaked down from the top floor to a cargo container.

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About 20 people, in pairs or in groups of three, chained their arms together inside sections of drain pipes and other plastic tubing and lay down on the road in front of the north gate, while eight other people did the same at the south gate.

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Inside is a deep, two-foot long plastic bin full of blue tubing and packets of asthma medicines.

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