3.1.6.3	-20°C, 12 months, 78% of original activity	
3.1.6.3	4°C, 12 months, 76% of original activity	
3.1.6.3	4°C, 20 mM phosphate buffer, pH 7.4, 2-mercaptoethanol, 1-3 months, 92-74% of original activity	
3.1.6.3	4°C, over P2O5, 12 months, 69% of original activity	
3.1.6.3	mycelium extract, freeze-dried, 3 months