Electron Magnetic Resonance Signals in Spinal Cord Tissues of Rats

Three types of magnetic resonance signals with a g-value above 2.1 were found in rat spinal cord tissues: a wide signal independent on the sample orientation in magnetic field and two types of orientation-dependent narrow signals: one-component and two-component signals. The temperature behavior of these three types of signals was studied. It is supposed that the wide signal may be due to ferritin crystal core and the orientation-dependent signals characterize the crystalline particles of magnetite.