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. 2018 Jan 18;16(1):e2003815. doi: 10.1371/journal.pbio.2003815

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© 2018 Alizon, Méthot

This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Fig 1 — Charles Darwin's painting is from George Richmond in the late 1830s after his return from his voyage on HMS Beagle, and the painting of Louis Pasteur in his laboratory is from Albert Edelfelt in 1885 (Museé d'Orsay, Paris, France).