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. Author manuscript; available in PMC: 2020 Jan 1.
Published in final edited form as: Nat Microbiol. 2019 Apr 29;4(7):1088–1095. doi: 10.1038/s41564-019-0432-7

Fig. 1.

Fig. 1

Light microscope images of south-seeking magnetic protists sampled in the Mediterranean Sea, Carry-le-Rouet, France. a, The microscope was focused on a point at the edge of the water droplet closest to the north pole of the bar magnet, producing a local field direction indicated by the black arrow (left). Reversing the bar magnet so that the south magnetic pole was closest to the edge of the drop caused south-seeking organisms to rotate and swim in the opposite direction towards the opposite edge of the droplet (middle and right, also indicated by black arrows). b,c, Confocal images of the striated, magnetically responsive protists (b) and their disaggregation 20 min after deposition between a slide and coverslip, showing the presence of rod-shaped bacteria detached from the surface of the protist (c). Scale bars, 20 μm (a) and 5 μm (b,c).