"Multiple sclerosis" . "Dosage forms" . "Medical statistics" . "Clinical research" . "French inventions" . "Epstein\u2013Barr virus-associated diseases" . "MULTICENTRE DOUBLE-BLIND STUDY OF EFFECT OF INTRATHECALLY ADMINISTERED NATURAL HUMAN FIBROBLAST INTERFERON ON EXACERBATIONS OF MULTIPLE SCLEROSIS" . "Antivirals" . "Cytokines" . "RTTNEURO" . "Scientific method" . "RTT(full)" . "Ailments of unknown cause" . . "Non-terminally differentiated (blast) cells" . "GAG secreting cells" . "Design of experiments" . "Routes of administration" . "Medical treatments" . "Connective tissue cells" .