2.7.1.82	-20°C or 0-4°C, crude cell extract, appreciable loss of activity	
2.7.1.82	-20°C, 0.02 M phosphate buffer, pH 7.0, 2.9 mM DTT, protein concentration 1.0 mg/ml, ethanolamine kinase I, 2 days, 40% loss of activity	
2.7.1.82	-20°C, 10 days, stable	
2.7.1.82	0-4°C or -20°C, partially purified enzyme, 10-14 days, 50% loss of activity	
2.7.1.82	4°C, 1 week, ethanolamine kinase I, 50% loss of activity