Inside the Knee (IMAGE) University of Pennsylvania School of Medicine Caption Heterogeneous tissue engineered constructs reproduce the microstructural, micromechanical, and mechanobiological features of the fibrous and proteoglycan-rich microdomains in native fibrocartilage. Image shows interactions between fibrous (red) and proteoglycan-rich (blue) microdomains at week 1 of culture. Credit Su Chin Heo and Woojin Han, Perelman School of Medicine, University of Pennsylvania Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.