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In addition to ependymal epithelial cells, numerous tanycytes are found along the entire central canal of the mouse. These tanycytes are arranged in clusters in the cervical, thoracic and lumbar segments of the spinal cord. In the conus medullaris, tanycytes separate and ensheath bundles of myelinated and unmyelinated axons; their processes take part in the formation of the stratum marginale gliae. In the caudal part of the spinal cord, the ventral wall of the central canal is thin and some areas are reduced to a single-cell thickness. In this region, ependymal cells participate directly in the formation of the stratum marginale gliae. The meninges consist of the intima piae, the pia mater, the arachnoid, a subdural neurothelium and the dura mater. The subarachnoid space appears occluded and opens only around the spinal roots. In the vicinity of the spinal ganglia, the dura mater, the subdural neurothelium and the arachnoid form a cellular reticulum. [ABSTRACT FROM AUTHOR]

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A 57-year-old male was repeatedly admitted to hospital because of complex neurological symptoms, including radicular pain, disturbance of micturition, seizures, and severely impaired mental state. The diagnosis was encephalomyeloradiculitis possibly of viral origin, and treatment with immunosuppressants was initiated. An alternating course with a tendency towards improvement ensued. Two and a half years after the occurrence of the initial symptoms, identification of specific antibodies in the blood and CSF led to the diagnosis of borreliosis with CNS involvement. High-dose therapy with penicillin rapidly reduced the symptoms, beginning with those of radicular pain and followed by an improvement of the mental state. Attention is directed to the wide spectrum of clinical symptoms of chronic borreliosis with CNS involvement. Previous reports that immunosuppression may result in some improvement but with a tendency towards relapse are confirmed. Our encouraging treatment results support those of other reports that penicillin therapy may lead to improvement even at late chronic stages in patients with severe CNS deficits. [ABSTRACT FROM AUTHOR]