👉 Red blood cells, or erythrocytes, are oval-shaped and lack nuclei for efficient oxygen transport. White blood cells, or leukocytes, vary in shape and size, playing critical roles in our body's immune response. In one swift motion, a nurse quickly counts white blood cell clusters on a slide with meticulous precision. Then, they gently wash the slides under a stream of saline to reveal their dynamic dance amidst red cells.
