The anchor link is a tubular structure with cylindrical housing on both the ends.

The outside of the tubular structure often has areoles that produce wool and spines.

The inner stamens are fused at the base to form a short tubular structure.

The combined tubular structures are referred to as the proboscis, although specialized terminology is used in some groups.

Suddenly the bridge was crowded again, with people staring at the tubular structure on the viewscreen.

They inhabit tubular structures composed of chitin and fixed to the bottom.

A single tubular structure resembling an aorta led from the left ventricle, they said.

The optional cloth canopy has plastic side windows, and is held up by a thin tubular structure that can easily be removed when not needed.

The function of these tubular structures remains to be discovered.

In the kidney, a tubular structure called the nephron filters blood to form urine.