Effect of PEGs on the growth of M. magnetotacticum MS-1 and the formation of magnetosomes.

* The cell concentration was evaluated, counting directly the number of cells in the culture medium using a Bacteria Counting Chamber.** The average values were obtained from two independent experiments.*** Normalized production rate of magnetosomes P was defined by P=Cp×Np/(C0×N0), where Cp and Np are, respectively, the final cell concentration and the average number of magnetosomes synthesized in each cell in the presence of PEG, whereas C0 and N0 are those in the absence of PEG.Effect of PEGs on the growth of M. magnetotacticum MS-1 and the formation of magnetosomes.