Significance: Our center has performed the first clinical trial with intrathecal and intravenous injection of adult stem cells in MS and ALS patients and has gained experience during the last 3 years with this type of stem cells treatment. After having evaluated the safety and feasibility issues, we intent to proceed to the second stage, to evaluate the migration ability of those cells (their ability to reach the affected motor areas of the CNS gray matter, by tracking them with a paramagnetic material and visualize them by MRI), and evaluate indications of clinical efficacy. This project may provide information for possible therapeutic uses of this type of bone marrow adult stem cells in MS and ALS but may also serve as a pilot platform and pave the path for future applications of various types of stem cells in neurodegerative diseases in general.