Chemicals in marijuana 'protect nervous system' against MS Chemicals in marijuana ‘protect nervous system’ against MS Dr. Kozela Medical News Today chemical compounds in marijuana that help treat Chemicals in marijuana ‘protect nervous system’ against MS Journal of Neuroimmune Pharmacology http://www.medicalnewstoday.com/articles/267161.php Multiple Sclerosis Multiple Sclerosis Chemicals in marijuana ‘protect nervous system’ against MS studies Chemicals in marijuana ‘protect nervous system’ against MS