3.2.1.123	-20°C, stable for at least 1 year	
3.2.1.123	0°C, protein concentration greater than 0.2 mg/ml, 50 mM sodium acetate buffer at pH 6.0 or 20 mM phosphate buffer at pH 7.2, 0.1-1.0% Triton X-100, stable for several months	
3.2.1.123	frozen, stable for at least 6 months