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Table 2 Clinical and demographic data of the study population used for in vitro cell culture experiments (age, sex, diagnosis, Pfirrmann grade [38], vertebral level)

From: Human MMP28 expression is unresponsive to inflammatory stimuli and does not correlate to the grade of intervertebral disc degeneration

Sample

Age

Sex

Diagnosis

Grade

Level

1

59

F

Disc Herniation

4

L4/5

2

61

M

Disc Herniation

4

L3/4

3

50

M

Disc Herniation

3

L5/S1

4

46

F

Disc Herniation

5

L5/S1

5

51

M

Symptomatic Disc Disease

3

L4/5

6

50

F

Disc Herniation

3

L3/4

7

51

F

Disc Herniation

3

L4/5

8

47

M

Disc Herniation

5

L4/5

9

42

M

Disc Herniation

4

L4/5

10

80

M

Disc Herniation

4

L2/3

11

50

M

Disc Herniation

4

L4/5

12

48

F

Symptomatic Disc Disease

3

L4/5

13

61

F

Disc Herniation

4

L4/5

14

37

F

Disc Herniation

4

L4/5

15

66

M

Disc Herniation

3

L5/S1

16

70

F

Disc Herniation

4

L5/S1

17

40

F

Disc Herniation

4

L4/5

18

55

F

Disc Herniation

3

L4/5

19

26

M

Disc Herniation

4

L5/S1

20

57

M

Disc Herniation

4

L4/5

  1. M = male, F = female, L = lumbar, S = sacral (grading according to Pfirrmann)