However, attempts to find EBV in the brains of MS patients have been unsuccessful in the past.[71] More recently, Jilek et al.[72] showed the presence of CD-8 responses to EBV but not CMV, in early MS, while Zivadinov et al.[73] correlated grey matter atrophy in MS with anti-EBV antibody responses. This evidence concerns the gene CD8A and myeloid sarcoma.