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Figure 2
X-ray diffraction pattern from myelin. This annotated X-ray diffraction pattern from a myelinated mammalian nerve provides a visual reference. The (radial) myelin elements are identified from diffraction appearing on a 160 Å primary spacing repeating at 79.39 Å for its second order. It is orientated at 90° to the neuron axonal long axis. A distinct diffraction element at ∼90° to the labeled myelin diffraction is observed at 78.24 Å and either originates from fibrous structures along the neurons axonal axis or from obliquely orientated nodal myelin [that is, obliquely oriented relative to the radial myelin as shown by Inouye et al. (2014BB11)]. In either case, the diffraction spacing is distinctly different from that of the main, strongest, diffraction of the neuron (the myelin diffraction labeled in this figure). Neuron structural representations were adapted from Fletcher & Mullins (2010BB27) and Siegel (2006BB21).

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
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