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Bar charts comparing the number of unique patients screened for NSA, ICA, and GSA antibodies during the pre-COVID (3 years) and COVID-19 (2 years) periods, showing also the number with positive results and the positivity rates. *p = 0.01. GSA = glial surface antigens; ICA = intracellular antigens; ns = not significant; NSA = neuronal surface antigens.
