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In a recent essay in Nature, Margaret McFall-Ngai posits that with regards to intracellular bacteria, "Although widespread among invertebrates, such associations seem to be absent from vertebrates." Can you think of an endosymbiont in a vertebrate? (mitochondria don't count.)
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Autumn,
In Talmudic tradition, a question is often answered with another question. Yours is very much to the point but the original question did not refer to organelles but to symbionts. I believe we went over that on a post of January 10.
Elio
Posted by: elio | June 26, 2008 at 08:47 AM