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Table 2 Modified scoring key for rat foot pad damage

From: Cartilage preservation by inhibition of Janus kinase 3 in two rodent models of rheumatoid arthritis

Score Proteoglycan retention Inflammation Bone damage
0 > 90% present Few cells Normal
1 > 50% present Slight to moderate Questionable damage
2 Only chondrocytes stain Moderate to heavy Damaged
3 < 10% present Extremely heavy