Malignant tumor of plasma cells. Any virus in the family Retroviridae that has RNA as its nucleic acid and uses the enzyme reverse transcriptase to copy its genome into the DNA of the host cells chromosomes. Under the skin. Of pyrimidine salvage, catalysing phosphorylation of thymine deoxyriboside to form its 5' phosphate, the nucleotide thymidylate. Brain tissue composed of myelin-coated nerve cell fibers.
White matter carries information between the nerve cells in the brain and spinal cord.
The inner portion of the cerebrum is composed of white matter.