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Researchers find our inner reptile hearts

The genetic building blocks behind the human heart's subtle control system have finally been identified

2012-09-14
(Press-News.org) Since the early 1900s, scientists have been wondering how birds and mammals could have developed almost identical conduction systems independently of each other when their common ancestor was a cold-blooded reptile with a sponge-like inner heart that has virtually no conduction bundles. The studies show that it is simply the spongy inner tissue in the foetal heart that gets stretched out to become a fine network of conductive tissue in adult birds and mammals. And this knowledge can be put to use in the future.

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[Press-News.org] Researchers find our inner reptile hearts
The genetic building blocks behind the human heart's subtle control system have finally been identified