Table I.

Comparison of fibrosis parameters between days 9 and 14 within each experimental group.

	Bleo group					Bleo + non-CM group					Bleo + AMTC-CM group
	Day 9		Day 14			Day 9		Day 14			Day 9		Day 14
	M	IQR	M	IQR	P	M	IQR	M	IQR	P	M	IQR	M	IQR	P
Fibrosis distribution	1.5	1.0	3.0	1.8	< 0.05	1.0	0.5	2.5	2.0	< 0.01	1.0	0.3	1.0	0.9	NS
Fibroblast proliferation	0.7	0.4	1.6	1.0	< 0.01	0.2	0.3	1.5	1.2	< 0.01	0.7	0.5	0.8	0.4	NS
Collagen deposition	1.2	0.3	2.0	1.2	< 0.05	1.0	0.8	2.2	1.0	< 0.01	1.0	0.5	1.4	0.5	NS
Alveolar obliteration	2.7	0.8	3.2	0.5	NS	2.3	0.8	3.1	1.2	< 0.05	2.5	1.2	2.3	0.8	NS

Fibrosis progression was observed in the control groups (Bleo and Bleo + non-CM) from days 9 to 14, but was absent in the AMTC-CM treated group.

Median (M) with IQR of scores obtained from animals of the same group at each time-point. The statistical differences between time-points of each group are reported as P-values, which were calculated as described in the Methods. NS, not significant.