['To prove that Bacillus thuringiensis serovar shandongiensis strain 89-T-34-22 produces several novel cytotoxic proteins against human leukaemic T cells.', 'Parasporal inclusion protein was solubilized and processed by proteinase K and was separated by anion-exchange chromatography. Cytopathic effects of each fraction against MOLT-4 and Jurkat cells were monitored.'] Does bacillus thuringiensis serovar shandongiensis strain 89-T-34-22 produce multiple cytotoxic proteins with similar molecular masses against human cancer cells?