A study of 16,000 people suggests that human herpesvirus 6A is a risk factor for developing multiple sclerosis, reinvigorating a neglected hypothesis that the virus could be involved in triggering the disease.
Many dominant T cell variants decline during pregnancy and reappear afterward, possibly explaining why relapses of the autoimmune disease are less common when women are expecting.
A Chicago-based center that has long operated a clinical trial program for stem cell therapies, has stopped recruiting further patients as its chief, Richard Burt, leaves for a research sabbatical.