Adaptive Immunity: Care for the community

@article{McFallNgai2007AdaptiveIC,
  title={Adaptive Immunity: Care for the community},
  author={M. McFall-Ngai},
  journal={Nature},
  year={2007},
  volume={445},
  pages={153-153}
}
A memory-based immune system may have evolved in vertebrates because of the need to recognize and manage complex communities of beneficial microbes. 
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