Additional file 4.

Longitudinal and transverse relaxation times of iron-labeled S. aureus cultures, measured at different growth stages. The measurements of the relaxivities showed that T1 did not change significantly over the time course, while T2 was significantly decreased at the beginning of the growth curve and increased steadily until a stationary value was reached after 3 h.

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Hoerr et al. BMC Biology 2013 11:63   doi:10.1186/1741-7007-11-63