From: Human disc cells in monolayer vs 3D culture: cell shape, division and matrix formation
 | Type I Collagen | Type II Collagen | Chondroitin | Keratan Sulfate |
---|---|---|---|---|
 |  |  | Sulfate |  |
Passage 1 | 93.9 ± 3.7 | 86.2 ± 1.7 | 90.0 ± 3.8 | 80.9 ± 7.0 |
Passage 2 | 96.7 ± 1.0 | 85.1 ± 3.0 | 87.3 ± 2.1 | 83.5 ± 2.6 |
Passage 3 | 98.1 ± 0.6 | 88.5 ± 2.3 | 91.6 ± 3.9 | 85.1 ± 3.0 |
Passage 4 | 97.4 ± 0.5 | 85.2 ± 1.6 | 96.2 ± 1.1 | 87.2 ± 2.3 |