"High-altitude adaptation in humans" . . . "adapted" . "High-altitude adaptation in humans" . "long-term adaptations" . "Adaptations" . "High-altitude adaptation in humans" . "adaptations at high altitudes" . "genetic adaptation to living in high altitudes" . "adaptations for living in high altitudes" . "genetic basis" . "adapt to high altitude" . "high-altitude adaptation in humans" . "Tibetan resistance to altitude sickness" . .