A close-up microscopic view showing red blood cells (RBCs) moving in a blood vessel. The RBCs, scientifically known as erythrocytes, have a distinctive biconcave disc shape with a smooth surface texture. The vibrant red color is due to hemoglobin. Small, round bubbles are also present, suggesting fluid dynamics and interaction with plasma. The background is a soft, dark blur, emphasizing the cellular movement and structure within the vessel.
