Implication of 5-HT7 Receptor in Inflammatory Mechanisms in Multiple Sclerosis

"Blood sampling will be done on three groups:~Group 1: Healthy volunteers, so-called control donors whose blood samples will be ordered from the EFS (French Blood Establishment) Group 2: Stable MS patients without inflammatory activity of the disease treated with high efficacy treatment (Natalizumab or Ocrelizumab) Group 3: Stable MS patients without inflammatory disease activity treated with moderately effective treatment (Teriflunomide or Fumarate)"