Postprint version. Published in Hyperfine Interactions, Volume 151-152, Issue 1-4, December 1, 2003, pages 145-153.
The definitive version is available at https://doi.org/10.1023/B:HYPE.0000020407.25316.c3.
Magnetotactic bacteria orient and migrate along magnetic field lines. Each cell is essentially a self-propelled magnetic dipole. The magnetic properties of these bacteria have been determined by a variety of techniques, including pulsed hysteresis measurements on single cells.