"Even with this technical wizardry, initial pairings tended to fail; for instance, because the would-be symbiont divided too fast and killed its host."
"Their approach uses a 500-1000 nanometre wide needle to puncture host cells and then deliver bacterial cells one at a time."
"The feat - described in Nature on 2 October - could help researchers to understand the origins of pairings that gave rise to specialized organelles called mitochondria and chloroplasts more than one billion years ago."
"The team's luck changed when they recreated a natural symbiosis that occurs between some strains of a fungal plant pathogen, Rhizopus microsporus, and the bacterium Mycetohabitans rhizoxinica, which produces a toxin that protects the fungus from predation."
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