Deathwatch beetle. The deathwatch beetle, Xestobium rufovillosum, is a woodboring beetle. The adult beetle is 7 millimetres (0.28 in) long, while the xylophagous larvae are up to 11 mm (0.43 in) long.
In medicine, a stent is a tube or other device placed in the body to create a passage between two hollow spaces, and stenting is the placement of a stent.
Stents are used to open blocked or narrowed arteries or veins. Stents may be used to help prevent coronary arteries from becoming narrowed or blocked repeatedly. A self-expanding stent used during chemotherapy ay be made of metal. Wire mesh metal stents are often used for an angioplastic procedure.