Are white blood cells in arteries?

No, white blood cells are not normally present in arteries.

Arteries are blood vessels that carry oxygenated blood away from the heart and to the rest of the body. They contain red blood cells, which carry oxygen, and platelets, which help to stop bleeding.

White blood cells are found in the lymphatic system and in veins, which are blood vessels that carry deoxygenated blood back to the heart. They help to fight infection and disease.