Postprint version. Published in Biophysical Journal, Volume 40, Issue 1, October 1, 1982, pages 83-85. Copyright © 1982 Elsevier. The definitive version is available at http://dx.doi.org/10.1016/S0006-3495(82)84461-5.
NOTE: At the time of publication, the author Richard B. Frankel was not yet affiliated with Cal Poly.
A birefringence technique is used to determine the average magnetic moments <μ> of magnetotactic bacteria in culture. Differences in <μ> are noted between live and dead bacteria, as well as between normal density and high density samples of live bacteria.