ERVW-1 and myeloid sarcoma: Similarly, on CD14+ cells HERV-H Env SU and HERV-W Env SU epitope expression levels were higher in patients with active MS compared with stable MS patients (for both SU epitopes, respectively p = 0.05, p = 0.05), healthy controls (for both SU epitopes, respectively p = 0.03, p = 0.0001), and neurological controls (for both SU epitopes, respectively p = 0.05, p = 0.0002).