Fifty-two plaque or lesion areas were examined from 25 cases of multiple sclerosis. Twenty-four of these showed acute features, whereas the rest were more chronic in nature. The acute lesions showed lymphocytic infiltration (79%), fibrinous exudation (63%), lymphocytic meningitis (50%) and venulitis (58%). Of the chronic lesions, there were only 21% with lymphocytic infiltration, 11% with fibri...
