Acute and Chronic Local Inflammatory Reaction after Implantation of Different Extracellular Porcine Dermis Collagen Matrices in Rats

Table 2

Number of foreign body giant cells after implantation of Permacol and NRX membranes. Wilcoxon signed rank test.

Material	Foreign body giant cells (cells/mm^2)
	Day 7	Day 28	Day 56	Day 112
Permacol	0.60 ± 0.26 (6)	0.23 ± 0.12 (6)	0.03 ± 0.03 (6)	0 (5)
NRX	1.05 ± 0.36 (6)	1.90 ± 0.37 (6)	1.65 ± 0.57 (6)	0.42 ± 0.25 (5)
Wilcoxon signed rank test