radiation in the absence of administration or binding of any autofluorescing benzofuran compound as distinguished from the radiation emitted following the administration and binding of such autofluorescing benzofuran compound and exposure to an external source of electromagnetic radiation as used herein the phrase u201c control sample representative of the tissue section u201d refers to a tissue sample of a similar size morphology or structure as the tissue sample to be analyzed and with a level of myelin whereby the sample 39 s level of myelin serves as a reference to which other samples 39 myelin levels may be compared the phrase u201c parenteral administration u201d refers to any means of introducing a substance or compound into a subject that does not involve oral ingestion or direct introduction to the gastrointestinal tract including but not limited to subcutaneous injection intraperitoneal injection intramuscular injection intravenous injection intrathecal injection intracerebral injection intracerebroventricular injection or intraspinal injection or any combination thereof as used herein the phrase u201c demyelination model u201d refers to any experimentally induced damage to or dysfunction of the insulating material ensheathing portions of neuronal cells that may be utilized in the experimental study of neuropathic demyelination including but not limited to experimental allergic encephalomyelitis the term u201c remyelination u201d refers to the spontaneous therapeutic or experimentally induced repair regeneration or otherwise enhanced constitution or functionality of the insulating material ensheathing neuronal axons unless otherwise indicated all numbers.