Table 1.

Histology of Rat Lung Transplantation with H&E Staining

Animal	Grading		Fibrosis/necrosis/thrombosis		Alveolar hemorrhage
	RA	CO	RA	CO	RA	CO
Day 6–1	4	2	+	−	2	0
Day 6–2	4	3	+	−	2	0
Day 6–3	4	4	+	−	1	2
Day 6–4	4	3	+	−	1	0
Day 6–5	4	2	+	−	2	0
Day 6–6	4	3	+	−	2	0
Average	4	2.8*	+	−	1.6	0.3*

*P < 0.05.

RA, Room air control group; CO, Carbon monoxide (500 ppm) group; +, presence of; −, absence of.

Alveolar hemorrhage: 0, none; 1, moderate; 2, severe.

Day 6-1 to Day 6-6 denotes separate animal sacrificed 6 days after transplantation.