Achilles tendinitis is inflammation of the Achilles (uh-KIL-eez) tendon, the band of tissue that connects calf muscles at the back of the lower leg to your heel bone.

The researchers believe the bone marrow stem cells reduce inflammation in the airways, the immune system's normal response to severe cases of asthma.

Periodontitis is an advanced form of gum disease resulting in inflammation within the supporting tissues of the teeth, "attachment loss" and a breakdown of the bone that supports your teeth.