ScienceDaily Posted February 20, 2018 Share Posted February 20, 2018 All extreme-altitude birds have evolved especially efficient systems for delivering scarce oxygen to their tissues. But a new study has found that these birds often evolved different blueprints for assembling the proteins -- hemoglobins -- that actually capture oxygen in the Himalayas and Andes. Read the full article on ScienceDaily Link to comment Share on other sites More sharing options...
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