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. 2015 Dec 9;12(12):15692–15705. doi: 10.3390/ijerph121215011

Table 1.

Severity of lesions in lung tissues response to nano Al2O3 treatment.

Group Lesion Severity Grade Average Severity Grade
1 2 3 4
male control 4 1
female control 4 1
male nano-Al2O3 3 1 2.25 ± 0.50 *
female nano-Al2O3 2 2 2.5 ± 0.58 *

* p < 0.05, compared with the corresponding sex control, n = 4.