Assertion: catalase's activity | /r/HasProperty | measured upon reaction
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Source sentences:
text: Spontaneous PO is defined as the activity measured upon reaction with 3,4 dihydroxy-DL-phenylalanine (DOPA), and corresponds to the enzyme that is already activated in physiological conditions and total activity was the activity observed after in vitro activation of the enzyme, by preincubating the sample with bovine trypsin.