Studies show how land and water mammals get vital oxygen

06/14/2013 | Nature (free content)

Whether at high altitudes or deep under water, mammals have the ability to get the oxygen their muscles need, according to three papers published in Science. Fish and aquatic mammals use hemoglobin and myoglobin, respectively, to provide vital oxygen. Deer mice living at high altitudes have different versions of hemoglobin than their low-altitude cousins.

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