Mouse Knee Joints
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![Caption: [Left] The knee joint of a normal mouse that endured an ACL-type injury. The injury triggered osteoarthritis and caused the cartilage on the femur (red) and tibia (green) to degrade, allowing the bones to sandwich together. [Right] This is the knee joint of a mouse that received gene therapy after the ACL injury. The cartilage is thick and healthy, and covers the bones completely, providing a cushion.](https://directorsblog.nih.gov/wp-content/uploads/2013/03/mouse-knee-joints.jpg)
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Editor
Kendall Morgan, Ph.D.
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