2.3.1.19	-20°C, less purified preparation, 50% v/v glycerol, 50% loss of activity in 5 d	
2.3.1.19	can be stored for two weeks without detectable loss of activity by dilution of eluted protein to below 0.5 mg/ml in HEPES buffer with 1.5 M NaCl	
2.3.1.19	dilution of eluted protein to below 0.5 mg/ml in HEPES buffer with 1.5 M NaCl, storage for two weeks without detectable loss of activity	
2.3.1.19	liquid N2, purified preparation, 50 mM sodium phosphate buffer, pH 7.0, various NaCl concentrations, 92-100% loss of activity