Later a family member unidentified so far raised suspicions with the police that led to testing blood and tissue samples.

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He teamed up with the horse handler, forming a private partnership that acquired successful dressage horses in Europe with names like Whitney and Franziskana and then brought them to the U.S. Elaborate measures had to be taken to prove the identity and health of the horses, including samples of blood and tissue.

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Part of this light is reflected back, and the pattern of reflection indicates activity in the tissue it has been reflected from in particular, changes in the flow of blood to that tissue.

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This approach has the advantage that the tissue has a functioning system of blood vessels to deliver nutrients, so it should be possible to grow tissue cultures more than a millimetre thick the current limit.

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Employing it in adult mice not only led to blood vessels that have lasted so far for over a year, but the blood vessels themselves are now surrounded with muscle tissue meaning that the body is able to use those vessels to properly regulate blood flow.

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All rely on catheters hollow tubes that let doctors burn away and reshape heart tissue or correct defects through small holes in blood vessels.

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