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An ancestral Matryoshka doll

This month’s Genome Watch highlights the genomic traits underlying the ancestral association between endobacteria, which live inside arbuscular mycorrhizal fungi, which in turn reside within plants.

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Correspondence to Esther Singer.

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Singer, E. An ancestral Matryoshka doll. Nat Rev Microbiol 19, 140 (2021).

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