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- n. Plural form of agnathan.
Sorry, no etymologies found.
By the time agnathans appear on the scene, over 300 million years of evolution have resulted in phagocytic protolympocytes armed with non-rearranging Ig molecules, a valuable part of the innate immune system, ideally poised to take advantage of a fortuitous insertion of the transposon RAG elements resulting in adaptive immunity.
It is the first time that a member of the jawless fishes (agnathans) have been captured from a hydrothermal vent site.