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Table 1 Functional classification of the most highly expressed 300 genes in the normal cartilage and the regenerated tissues harvested at 2 and 4 weeks.

From: Gene expression profile of the cartilage tissue spontaneously regenerated in vivo by using a novel double-network gel: Comparisons with the normal articular cartilage

Functional Normal Regenerated tissue Regenerated tissue
Categories Cartilage (2 weeks) (4 weeks)
Protein metabolism 42 (14.0%) 36 (12.0%) 37 (12.3%)
Cell communication/Signal transduction 25 (8.3%) 24 (8.0%) 23 (7.7%)
Cell growth and/or maintenance 21 (7.0%) 36 (12.0%) 37 (12.3%)
Regulation of nucleobase 14 (4.7%) 16 (5.3%) 15 (5.0%)
Energy pathways/Metabolism 14 (4.7%) 11 (3.7%) 13 (4.3%)
Immune response 12 (4.0%) 9 (3.0%) 10 (3.3%)
Transport 8 (2.6%) 8 (2.7%) 10 (3.3%)
Unknown 164 (54.7%) 160 (53.3%) 155 (51.8%)
  1. (Unit: genes)