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Osteoclasts resorb and break down bone tissue as part of the body's natural bone remodelling and maintenance process.

They tunnel into their food, secrete digestive enzymes and then resorb the resulting goo.

“Pressure and time are used to shrink the volume and diameter of gas bubbles in the tissue and allow them to resorb into the animal,” Weisbrod said.

“It’s a little-known fact that in addition to losing collagen and elastin as we age, we also resorb bone, so the whole scaffolding of the face is actually shrinking overtime,” Dr. Engelman said.

The integrity of the adult skeleton must be maintained by tightly coupled bone-remodelling processes: old bone is resorbed by cells called osteoclasts and is replaced by new bone, which is synthesized by cells called osteoblasts1.