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Bhattacharya, D., Friedl, T. & Helms, G. Vertical Evolution and Intragenic Spread of Lichen-Fungal Group I Introns . J Mol Evol 55, 74–84 (2002). https://doi.org/10.1007/s00239-001-2305-x
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DOI: https://doi.org/10.1007/s00239-001-2305-x