This amazing video is of a human heart beating.

This portable perfusion and monitoring system is made by TransMedics® and was designed as an alternative to the cold storage human heart preservation method. Warm, oxygenated, nutrient enriched blood permeates the heart muscle keeping the heart beating while a surgeon prepares for a donor heart transplant operation.

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• New device revives “dead” heart for transplant!

Tags: bizarre science, freaky videos, heart transplant