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Science Daily — One day soon, laboratories may grow synthetically engineered tissues such as muscle or cartilage needed for transplants. In a major step forward, Cornell engineers describe in the journal Nature Materials a microvascular system they have developed that can nourish growing tissues.

The researchers have engineered tiny channels within a water-based gel that mimic a vascular system at the cellular scale and can supply oxygen, essential nutrients and growth factors to feed individual cells. The so-called gel scaffold can hold tens of millions of living cells per milliliter in a 3-D arrangement, such as in the shape of a knee meniscus, to create a template for tissue to form.

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