Table 2.

The summary of the histopathological results of rats repeatedly inhaled with the mixture of SM and propylene glycol (PG).

Groups histopathology	Groups	Control	Vehicle	Low	Middle	High
		0	PG1%	PG1%+SM1%	PG1%+SM5%	PG1%+SM20%
	No. examined	4	4	4	4	4
Liver
No specific lesion		1 (25.0)	1 (25.0)	1 (25.0)	2 (50.0)	0 (0.00)
Cell infiltration, mononuclear cells,		3 (75.0)	3 (75.0)	3 (75.0)	2 (50.0)	4 (100)
multifocal
Grades; minimal		3	3	2	2	4
mild		0	0	1	0	0
Lung
No specific lesion		3 (75.0)	2 (50.0)	3 (75.0)	3 (75.0)	3 (75.0)
Vascular mineralization, focal		1 (25.0)	1 (25.0)	1 (25.0)	0 (0.00)	1 (25.0)
Grades; minimal		1	1	1	0	1
Nasal cavity
No specific lesion		4 (100)	4 (100)	4 (100)	3 (75.0)	0 (0.00)
Metaplasia, squamous cells, Line I		0 (0.00)	0 (0.00)	0 (0.00)	1 (25.0)	4 (100)
Grades; minimal		0	0	0	1	0
mild		0	0	0	0	4