Immunological Risk Assessment of Xenogeneic Dural Patch by Comparing with Raw Material via GTKO Mice

Table 3

Summarized semiquantitative scoring scheme of histological evaluation.

Group		Inflammation (×2)	Neovascularization	Average^a	Number of implants examined^b
At 4 w	Con	20	0	2	20
	T1	124	39	16.3	20
	T2	70	27	9.7	20
At 12 w	Con	20	0	2	20
	T1	68	28	10.6	20
	T2	58	29	8.7	20

^aUsed to determine reactivity ranking shown below as the conclusion. A negative difference is recorded as zero. ^bHistological evaluation score represents the averaged score for that animal across the number of implants examined.