3D bioprinting
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Scientists have created “acoustic holograms” that can assemble matter into 3D objects, using just sound. The technique works with various types of particles and even living cells, allowing for a new kind of 3D printing that’s fast and contact-free.
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There may soon be new hope for patients born with genetic defects that leave them with misshapen or missing ears. A new human clinical trial will test an implant known as an AuriNovo, which uses a 3D-bioprinted ear grown from the patient’s own cells.
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While the 3D bioprinting of tissue and organs does hold great promise in the field of medicine, the printed materials typically have quite a short shelf life. An experimental new bio-ink, however, allows bioprinted tissue to be stored in a frozen state for months at a time.
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Earlier this year, we heard how two separate groups had developed the world's first lab-grown rib-eye steak and Waygu beef. Israeli startup MeaTech 3D is now joining their ranks, with a "cultivated steak" of its own.
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When it comes to the 3D bioprinting of replacement body parts or other implanted items, the material that's used needs to be strong yet flexible, and also biocompatible. According to new research, sunflower pollen may be the way to go.
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For some time now, we've been hearing about scaffolding-like implants that encourage bone tissue or cartilage to grow back into areas where it's missing. Now, scientists have developed a method for more quickly and easily 3D-printing such implants.
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The University of Alberta has developed a new technique for 3D printing cartilage in custom shapes. This can be used to repair the noses of skin cancer patients, saving them the trouble of having cartilage samples taken from other parts of the body.
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Scientists have developed a new way to patch up injuries by 3D printing both hard and soft tissues at the same time, using two different “bioinks.” In tests on rats, the team was able to repair holes in the skulls and skin of the rodents in minutes.
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A little over two years after Israel-based start-up Aleph Farms unveiled the world’s first lab-grown steak, the company has now revealed a much more complex, thick-cut rib-eye steak cultivated using a novel 3D bioprinting technology.
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Presently, if a patient is missing a section of bone, it has to be replaced with bone harvested from elsewhere in their body. A new cell-containing gel, however, could one day be 3D printed right into the injury, where it would then harden.
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One of the challenges in 3D printing biological tissue lies in the fact that the cells may die before oxygen-delivering blood vessels grow into the material. Harvard scientists are addressing that issue, by adding algae to the mix.
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Human knees are notoriously vulnerable to injury or wearing out with age, often culminating in the need for surgery. Now researchers have created new hybrid bioinks that can be used to 3D print structures to replace damaged cartilage in the knee.
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