Figure 2
Top-down (A) and side view (B,C) of a healthy cartilage sample. (C) Zonal colour labelling of the predominant spatial chondrocyte arrangement: blue—superficial zone, green—single strings, yellow—double strings, grey—subchondral bone. The sample still shows an intact superficial zone. Underlying is a thick layer of healthy cartilage composed of single strings. Only at the transition to the subchondral bone some isolated double strings can be detected. The black wedges are a digital artefact of straightening the image. This figure was created using Adobe Photoshop CS6 (https://www.adobe.com/ch_de/products/photoshop.html) and Adobe Illustrator CS6 (https://www.adobe.com/ch_de/products/illustrator.html).
