AE3803

AE3803 is the identification number of the Red Blood Cell (also known as Erythrocyte) who serves as one of the main characters in the manga Cells at Work!. Like real-life erythrocytes, she delivers oxygen to the body's cells, but is a bit of an airhead and gets lost easily. Her hair notably has a sickle-shaped protrusion on one side of her head, suggesting that she's a "sickle-cell".

Throughout the story, AE3803 has several encounters with a White Blood Cell named U-1146.