Encephalitis antigen is suitable for ELISA and Western blots, excellent antigen for detection of Tick-borne encephalitis virus with minimal specificity problems. The E.coli derived recombinant protein contains the Tick-borne Encephalitis Virus preM protein epitopes. 20mM MES pH 6.5, 8M urea, 200mM NaCl and 0.05% Tween-20. Encephalitis protein was purified by proprietary chromatographic technique. Immunoreactive with sera of encephalitis virus infected individuals.