Fig. 2
Collagenase inhibition of the fractions with improved quality and Marula oil tested at 100 and 10 μg/ml (Error bars represent SEM, with n = 3). 
= P < 0.05, 
= P < 0.01 represent a significant difference with EDTA at 10 μg/ml and 
= P < 0.05, 
= P < 0.01 represent a significant difference with EDTA at 100 μg/ml