Bone socket of a tooth; air sac of the lungs, etc.

The air sac inoculated high-dose group exhibited a mortality rate of 67%.

The air sac has become a swim bladder.

When something blocks or scars those twigs, the air sac on the other side can't inflate.

An air sac with cellular spaces is connected with the gullet and serves as a rudimentary lung.

Each blocked air sac represents a fraction less air that lung is capable of breathing-breathingcapacity it does not get back.

It grunted again, its wide, leathery, bullfrog-shaped head bobbing, and the air sac below its neck inflating and deflating with the sound.

Six hours after the start of transport, SC birds were also inoculated in the thoracic air sac with 1×10(4) colony-forming units of E. coli.

He recognized it by the particular mottling of its air sacs.

Belck quickly lost his buoyancy as he emptied his air sacs.

Emphysema involves the destruction of the air sacs and cells in lung tissue.

The Physiome Projectés working model of human lungs, complete with 300 million air sacs.

The air sacs in the lungs tend to stay collapsed.

The skins of their air sacs tightened, drawing the features of their tiny faces into caricatures.

4 It belongs to the sargassum family, and is full of air sacs.

By inflating their abdominal air sacs, they fool males into thinking their eggs are mature when they're not.