Origin of life: How a special group of single-celled organisms laid the foundation for complex cells
Ten years ago, nobody knew that Asgard archaea even existed. In 2015, however, researchers examining deep-sea sediments ...
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A Hunt for Clues to the Origins of the Eukaryotic Immune System
Scientists propose that the eukaryotic branch of this family tree formed when two prokaryotes, an ancient bacterium and archaeal cell, merged, forming a symbiotic relationship maintained over time. 1 ...