U-1146 is a [[white blood cell (hataraku saibou)|white blood cell]] from [i][[Hataraku Saibou]][/i]. He is the dual protagonist along with the red blood cell [[AE-3803]].

He is more specifically a neutrophil, one of the most common types of white blood cells. In the anime, neutrophils are depicted in all white with white skin and uniforms. 
1146番 U-1146