12:00 PM - 12:15 PM
[SEM18-12] Density separation and magnetic measurements of magnetotactic bacteria Magnetospirillum magnetotacticum MS-1
Preliminary reports on properties and characters of the remanent magnetization carried by the samples have been presented in Masaoka et al (2018JpGU; 2018SGEPSS), but MS-1 cells used for making samples rarely contain magnetite grains in these cells (3 percent of the total cells). To try to increase number of the cells containing magnetite grains, we have tested a density separation method using different density gradient centrifugation and made samples for magnetic measurements using these cells. We will report these results including observations under transmission electron microscope.