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. Author manuscript; available in PMC: 2021 Jul 1.

Published in final edited form as: J Biomed Mater Res B Appl Biomater. 2020 Jan 21;108(5):2238–2249. doi: 10.1002/jbm.b.34561

TABLE 2.

Extracellular matrix assessment

Residual fibrin score^a	Connective tissue score^a	Debris score^b
		0: None
1: 0–10%	1: 75–100%	1: Minimal (<5% area covered)
2: 11–25%	2: 50–75%	2: Mild (2–25% area covered)
3: 26–50%	3: 25–49%	3: Moderate (25–50% area covered)
4: >50%	4: 0–24%	4: Severe (>50% area covered)

^a

Assessed using trichrome-stained slides.

^b

Assessed using H&E-stained slides.