👉 Red blood cells are fluid-filled spheres, constantly drifting through veins and arteries, delivering oxygen. White blood cells are more irregularly shaped, bouncing in immune responses to fight infections swiftly.
👉 Red blood cells are fluid-filled spheres, constantly drifting through veins and arteries, delivering oxygen. White blood cells are more irregularly shaped, bouncing in immune responses to fight infections swiftly.
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