Table 1: Distribution according to the mean of the grade of microscopic alterations according to parietal and visceral inflammation in relation to the groups.

Acute inflammation Chronic inflammation
CopaibaSilver nitrateCopaibaSilver nitrate
Mean ± SDMean ± SDMean ± SDMean ± SD

Parietal pleura
24 h1.63 ± 1.060.38 ± 0.520.0100.00 ± 0.000.38 ± 0.520.060
48 h0.50 ± 0.780.50 ± 0.780.9990.88 ± 0.830.50 ± 0.530.303
72 h1.38 ± 0.920.25 ± 0.460.0080.00 ± 0.000.50 ± 0.530.019
504 h0.00 ± 0.000.25 ± 0.460.1490.38 ± 0.520.13 ± 0.350.278

Visceral pleura
24 h1.12 ± 0.640.88 ± 0.830.513 0.13 ± 0.350.38 ± 0.520.278
48 h0.50 ± 0.780.50 ± 0.780.9990.63 ± 0.520.63 ± 0.520.999
72 h1.13 ± 0.830.88 ± 0.830.559 0.13 ± 0.350.38 ± 0.520.278
504 h0.13 ± 0.350.13 ± 0.350.9990.75 ± 0.710.75 ± 0.460.902

Student’s -test. Value of in bold italic indicates statistical difference at 5%. : time of euthanasia.