|ANIME DEBUT||Episode 1|
|MANGA DEBUT||Chapter 1|
Platelet (血小板 Kesshōban?) is a minor character in Cells at Work!
She is a type of blood cell working under the Platelet Division. Together with her kind, she is responsible for reconstructing injuries and forming blood clots in the body.
She is usually accompanied by a platelet boy who appears to assisting her in all tasks.
Due to the Platelet's actual cell size, they are depicted as children. She is a small, adorable cell with waist-length caramel blonde hair and brown eyes. She wears the Platelet uniform and always seen working with her fellow workers. The uniforms are reminiscent of real life Kindergarten students.
Platelet is a polite, bouncy cell that manifests a strong leadership to other Platelets. Her innocent and humble character made her lovable to other cells. She enjoys the cuddling and attention she gets from AE3803.
Despite their size and looks, Platelets play important roles in the body, such as fixing wounds.
- Overall Abilities: Platelets are powerless against threats. However, they are small and nimble, thus able to move through bacterium to cover up wounds under the protection of white blood cells.
- Thrombus (Blood Clot): Platelets can aggregate together to close an open wound. They use a protein known as "Von Willebrand Factor" to help them, which functions similarly to super-glue. The "Coagulation Factors" in the blood will work to coat the clot with a net of Fibrin, causing it to solidify.