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Skin: The First Tissue-Engineered Products

Last year the first living, tissue-engineered skin product became commercially available--and a second is expected to be on the market within a few months. Top researchers from each of the two companies involved tell how their products came to be

Encapsulated Cells as Therapy

An emerging approach to treating disease combines living cells with plastic membranes that shield the cells from immune attack

By Michael J. Lysaght and Patrick Aebischer

Embryonic Stem Cells for Medicine

Cells able to generate virtually all other cell types have recently been isolated. One day they could help repair a wide variety of damaged tissues

By Roger A. Pedersen

Is Space Finite?

Conventional wisdom says the universe is infinite. But it could be finite, merely giving the illusion of infinity. Upcoming measurements may finally answer this ancient question

By Glenn D. Starkman, Jean-Pierre Luminet and Jeffrey R. Weeks

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