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Miliardi di minuscole vescicole contenenti DNA e nutrimenti presenti nell'acqua degli oceani sono state scoperte dai ricercatori dell'Istituto di tecnologia del Massachusetts.
Le vescicole, invisibili all'occhio umano, sono prodotte da un batterio scoperto negli anni 80, responsabile della produzione della metà dell'ossigeno atmosferico.
Le vescicole potrebbero garantire sostentamento ad altri microrganismi ma anche funzionare come "corrieri" per lo scambio di materiale genetico oppure come "falsi bersagli" in grado di ingannare i virus e neutralizzarli.
ATS/A.B.
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