Table 4.

Summary of Fibroblast and Keratinocyte Proliferation, and Fibrin Construct Stiffness

Final cell proliferation (% of day 1)	5 mg/mL	10 mg/mL	20 mg/mL
Fibroblasts
Clinical fibrin	1890±220	1940±300	2170±160
PD fibrin	1980±310	1510±430	2320±410
Keratinocytes
Clinical fibrin	420±30	250±50	200±40
PD fibrin	130±60	82±30	40±20

Final construct stiffness (kPa)	5 mg/mL	10 mg/mL	20 mg/mL
Fibroblasts
Clinical fibrin	0	0	0
PD fibrin	1.2±0.1	1.9±0.8	5.7±0.2
Keratinocytes
Clinical fibrin	0	0	2.6±0.4
PD fibrin	1.4±0.1	3.3±0.1	8.5±0.6

Mean values±standard error.