A form of parthenogenesis in which only males are produced from unfertilized eggs.

Ars is the abbreviation for arsenic, a chemical element with symbol As and atomic number 33.

An X-ray image of an artery taken after injecting a contrast dye.

A medical imaging technique to visualize the inside of arteries using contrast media.

A small branch of an artery that leads into capillaries.

The thickening and hardening of artery walls, often due to aging or disease.

A blood vessel that carries blood away from the heart to various parts of the body.

Inflammation of joints causing pain and stiffness.

A surgical procedure to fuse the bones in a joint.

An invertebrate animal of the phylum Arthropoda, including insects, arachnids, and crustaceans.