Pathogens may have facilitated the evolution of warm-blooded animals

Six hundred million years ago, fever appeared in animals as a response to infections: the higher body temperatures optimized their immune systems. At the time, virtually all animal species were cold-blooded. They had to sit in warm patches of habitat for extended periods of time to achieve fever-ran …
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Enlace: Pathogens may have facilitated the evolution of warm-blooded animals