Scientists discover ancient single-celled ancestors still live on in your blood

1 week ago 24

Nearly every animal species, including humans, has blood cells. But blood is not the same across the animal kingdom. Different species have evolved different types of blood and immune cells, reflecting millions of years of adaptation against infection and disease.

Scientists already understand a great deal about the makeup and function of blood cells in humans and mice thanks to advances in hematology and immunology. What has remained unclear is how these cell...

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