Microbiologist and chemist whose experiments connected fermentation with living microorganisms and challenged spontaneous generation. Experiments separating access to air from access to dust-bearing contamination made the origin of growth in an infusion a question of controlled exposure rather than appearance alone.[ref]
Sur les corpuscules organisés qui existent dans l'atmosphère by Louis Pasteur. Atmospheric-contamination experiments
Researcher in microbial evolution. Imachi and collaborators isolated an archaeon relevant to the prokaryote–eukaryote transition, connecting cultivation of a previously inaccessible organism with hypotheses about complex-cell origins.[ref]
Isolation of an archaeon at the prokaryote-eukaryote interface by Hiroyuki Imachi and others. Title, author list and reported study
Researcher in microbial genetics. With Joshua Lederberg, Lederberg coauthored the replica-plating study, which preserved colony patterns across growth conditions to distinguish pre-existing mutants from changes caused by selection.[ref]
Replica plating and indirect selection of bacterial mutants by Joshua Lederberg and Esther Lederberg. Title, author list and reported study
Portrait of Esther Lederberg
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Microbiologist studying bacterial genome maintenance. Stewart and collaborators compared maintenance functions of linear and circular plasmids in Borrelia burgdorferi, testing how different DNA structures can share inheritance mechanisms.[ref]
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