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Marsupial genome reveals insights into mammalian evolution

int regions that have important functions and therefore have been conserved for long periods of time. The monotremes split off from other mammals 210 million years ago. The remaining marsupials split from the main (placental) group about 180 years ago."

Significantly, the authors also found data supporting the idea that there was an ancient relationship between the MHC and another critical component of the immune system, the natural killer complex (NKC), which contains natural killer (NK) cell receptor loci. This "immune supercomplex," which no longer exists in modern genomes, performed the MHC functions in ancestral mammals. "Understanding the immune system of marsupials and monotremes will help us to conserve our native species," Belov says.


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Source:Public Library of Science


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