Table 1.

Qualitative Assessments in Histopathological Examination of Lung Tissues From ECIG, HTP, CS, ECIG + CS, HTP + CS, and HTP + ECIG, as Compared to Control Lung Tissues

	CS > ECIG + CS, and HTP + CS	ECIG, HTP, and HTP + ECIG
H&E staining	1. Increased infiltration of inflammatory cells around the bronchioles 2. Decreased alveolar spaces 3. Thickened alveolar walls	Limited lung injury
Masson trichrome staining (MS) (Collagen deposits)	Abundant MS around bronchioles	Limited MS around bronchioles