highly significantP < 0.05
Differences were considered significant, very significant and highly significant (indicated by *, ** , *** in the figures) if P < 0.05, P < 0.01, and P < 0.001, respectively.
Differences were considered significant, very significant and highly significant (indicated by *, ** , *** in the figures) if P < 0.05, P < 0.01, and P < 0.001, respectively.