2.7.4.12	4	-	3 min, about 60% loss of activity at 37°C	642541	
2.7.4.12	4.4	-	37°C, 3 min, about 30% loss of activity, and about 45% loss of activity within 6 min	642541	
2.7.4.12	4.7	-	15 min, about 20% loss of activity at 37°C	642541	
2.7.4.12	5.4	-	15 min stable at 37°C	642541