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Table 3 Functional classification of 307 and 270 genes that were expressed in the regenerated tissues harvested at 2 and 4 weeks, respectively, 5 times or more as compared with the normal cartilage.

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 categories 2 weeks 4 weeks
Protein metabolism 79 (25.7%) 69 (25.7%)
Cell growth and/or maintenance 63 (20.5%) 54 (20.0%)
Cell communication/Signal transduction 32 (10.4%) 29 (10.7%)
Transport 14 (4.6%) 13 (4.8%)
Energy pathways/Metabolism 12 (3.9%) 9 (3.3%)
Regulation of nucleobase 10 (3.3%) 9 (3.3%)
Immune response 5 (1.6%) 6 (2.2%)
Unknown 92 (30.0%) 81 (30.0%)
  1. (Unit: genes)