highly significantp < 0.01
The observed differences in the values of the average NPB number/sample between the exposure times of 3 h and 24 h for each silver solution were highly significant ( p < 0.01; Table 2 ).
The observed differences in the values of the average NPB number/sample between the exposure times of 3 h and 24 h for each silver solution were highly significant ( p < 0.01; Table 2 ).