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Table 1 Expression level of protease genes in each catalytic class

From: Degradome expression profiling in human articular cartilage

Expression level Aspartate proteases Cysteine proteases Metalloproteases Serine proteases Threonine proteases
  NOF OA NOF OA NOF OA NOF OA NOF OA
20 < Ct < 25 0 1 2 4 2 4 3 3 0 0
25 < Ct < 30 10 10 85 80 70 74 47 51 16 17
30 < Ct < 35 4 5 33 38 52 70 29 33 8 6
35 < Ct < 40 2 1 8 6 17 5 19 21 1 2
ND 5 4 11 11 47 35 64 54 3 3
  1. NOF, fracture to the neck of femur; OA, osteoarthritis; Ct, threshold cycle; ND, not detected (median Ct = 40).