If you suffer from hayfever in spring or food allergies, you might want to blame a Neanderthal or Denisovan ancestor. The interspecies mating that accounts for a small proportion of our genome has given some people a hyper-alert immune system, providing extra protection at the cost of overreacting to harmless pollen or foods.
If you suffer from hayfever in spring or food allergies, you might want to blame a Neanderthal or Denisovan ancestor. The interspecies mating that accounts for a small proportion of our genome has given some people a hyper-alert immune system, providing extra protection at the cost of overreacting to harmless pollen or foods.
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