Prellis Biologics says it is overcoming a major obstacle to success, and just raised $1.8 million in new seed funding.Prellis Biologics, a human tissue engineering company, has invented a new way to create what it says are viable human organs using near instantaneous 3-D printing. This type of development, if proven out, could be a boon for hospitals and health systems with long lists of patients waiting for donor organs.Founded by two scientists with extensive experience in 3-D tissue imaging and stem cell biology, Prellis Biologics says it is solving the greatest obstacle to producing functional human tissue in the lab the ability to print microvasculature. Without the complex microvascular system needed to supply nutrients and oxygen to cells, an organ cannot survive.

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