Key words: blood-brain barrier, infectious agent, multiple sclerosis Infl uence of infectious factor on the condition of bloodbrain barrier in patients with multiple sclerosis VASYLOVSKYI Vitaliy, VOLOSHYNA Natalia, СHERNENKO Maksym Pages: 5-7 Ukrains'kyi Visnyk Psykhonevrolohii 2013, Volume 21, issue 1 (74) Index UDK: 616.832-004.2:616.831-002.151