| 1 | The bones in his skeleton have not yet hardened and currently consist of rubbery cartilage. | |
| 2 | Having the texture of cartilage; firm and tough, yet flexible. | |
| 3 | Yaws is a chronic infection that affects mainly the skin, bone and cartilage. | |
| 4 | Like the cartilage in your ears or nose, it's just kind of there. | |
| 5 | Sharks have strong, complex immune systems that include an angiogenin inhibitor in their cartilage. |