title: Some problems of the development and aging of nervous system. II. Myelination of spinal roots in the 2nd half of fetal life and in early infancy.
mesh_terms: D000375:Aging; D005260:Female; D005333:Fetus / Q000502:physiology*; D005865:Gestational Age; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D009186:Myelin Sheath; D011247:Pregnancy; D013126:Spinal Nerve Roots / Q000196:embryology / Q000254:growth & development*