Blood cells are the most common type of cell in the human body and are essential for life. Erythrocyte (11 letters) is a RED blood cell that carries oxygen throughout the body. Hemocyte (8 letters) is another name for erythrocyte. CORPUSCLE (9 letters) is an old term for a RED blood cell. Leukocyte (9 letters) is a white blood cell that helps fight infection. RED (3 letters) is a color associated with erythrocytes. Platelet (8 letters) is a small cell fragment that helps with clotting. Lymphocyte (10 letters) is a type of white blood cell that helps the body fight disease.