The human immunodeficiency virus destroys the immune system, causing the body to lose its ability to fight disease.

The human immunodeficiency virus is the virus that causes AIDS.

The feline immunodeficiency virus can potentially have serious effects on a cat's health.

My cat has been infected with the feline immunodeficiency virus.

This shape is called a muoctahedron, in other words, a hexagonal four-piece square hole twisted polyhedron.

He lives with the spirit of 'I alone am the honored one under heaven and on earth.'

The great icosihemidodecahedron is a cube with a very complex shape.

He is suffering from acquired immune deficiency syndrome (AIDS).

This is a 六角四片四角孔ねじれ正多面體, in other words, a muoctahedron.

This is a model of a muoctahedron.