Table 1.

Average collagen deposition in irradiated and nonirradiated wounds after treatment using the three different biomaterials, n=5 for each treatment

	Mean±SD
Biomaterials	Irradiated rat	Nonirradiated rat
Day 7
Bilayer engineered skin substitute	1±0.00	1.4±0.25
Chitosan skin template	1±0.00	1.6±0.25
Duoderm®	1±0.00	1.6±0.40
Day 14
Bilayer engineered skin substitute	3.0±0.00	3.0±0.48
Chitosan skin template	3.2±0.20	3.2±0.20
Duoderm	3.0±0.55	3.6±0.25
Day 21
Bilayer engineered skin substitute	3.4±0.25	3.4±0.40
Chitosan skin template	3.2±0.58	2.8±0.37
Duoderm	2.0±0.63	2.2±0.74

SD, standard deviations.