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. Author manuscript; available in PMC: 2013 Oct 25.
Published in final edited form as: Nature. 2013 Apr 25;496(7446):486–489. doi: 10.1038/nature12072

Figure 2. Wide-field optical and magnetic images of magnetotactic bacteria.

Figure 2

a, Bright-field optical image of MTB adhered to the diamond surface while immersed in PBS. b, Image of magnetic field projection along the [111] crystallographic axis in the diamond for the same region as a, determined from NV ODMR. Superimposed outlines indicate MTB locations determined from a. Outline colours indicate results of the live-dead assay performed after measuring the magnetic field (black for living, red for dead, and grey for indeterminate). c, Bright-field image of dried MTB on the diamond chip. d, Image of magnetic field projection along [111] for the same region, with outlines indicating MTB locations determined from c.