Preliminary Study for Selective Detection of the CD8+ Myelin Specific T Cell in the Blood of Multiple Sclerosis Patients

The blood will be sampled in order to be tested in Immunology, twice, the day they sign their agreement and six months after in case of positive myelin pentamer test (at inclusion and 6 months after the inclusion).

The blood will be sampled in order to be tested in Immunology, once, the day they sign their agreement (at the inclusion)